Hi I hope some of you old pros can help answer my,,well lets say help me figure out how to get my Jadis defy 7 to sing. I purchased the amp used (like new, as the seller had a Jadis JA200 mono blocks laready and the Defy sat quiet, So I bought it in 2008. Months later i purchased a MINGDA tube pre amp, sounded AWEFUL, Not even close to my jadis Orch reference, KT90's EI tubes, that intergrtaed was really all I needed, i made a huge costly mistake selling and buying the DEFY 7, I do believe that w/o a powerful pre, to DRIVE the FQ's into the Defy, the Defy will not respo9nd. The sound is flat, lifeless, no dynamics, The Orch Refer had HUGE sound stage, bass, GORGEOUS life like mids, nice sweet highs. I wanted more and bought the Defy,. I just had the Defy cked in Baton Rouge, had the KT90's brand new EH tuibes biased . I have a ONKYO preamp arriving next week and am about to buy a Mitshibushi Pre amp, I have a LITE LS9 , chinese tube preamp, and that pre sounds like the,,no worse than the heftier Ming Da. This Lite LS9 is suppose to be a copy of the Jadis 200 pre, It weighs only 7 lbs, the trans is light weight. I get the idea the jadis Defy needs a great hefty powerful prem, which is what folks told me back when i bought it, I did not believe them.
I am low on cash and will list the Defy for $3500 and i will pay shipping. I will then wait fora great used Jadis intergrated, say a DA50.
But I 1st want to try the 2 solid state pres to see if i can get the Defy to wake up. It I can get some better respose , i may keep it and look for a good used Audio reserach or a macnintosh. I do not have $6K for a jadis pre used. My budget is $1K any help is greatly appreacitaed. I have the uncredibly SEAS Thor MTM speakser along with the CAYIN tube cd player with upgraded opamps . As I say I am very close to selling the hge, hardly used (Like New) amp, due to my doubts that I can get the amp to respond like its tiny brother , The Orch Reference. btw I am the one who coined the tag *shootout* wayyyy back in 2000, or 2001 I stared a thread of speaker shootouts,,,and based on that long thread, i bought the SEAS THor kits. I now see *shoot out* is now the common tag for speaker and stereo components comparison. My old login was Bartokfan. Look forward to any suggestions in my dilemma. paul new orleans
First, think clearly. The thread is about purchasing many cheap preamps, the one in question being around $500.00. What do you think you are going to get for $500.00 from a Chinese company no one ever heard of that is trying to clone an expensive ARC preamp for a fraction of the price? Why don't you buy one and if isn't a piece of crap, I'll buy it from you?
Second, I do not need to be schooled by you and I have nothing against Chinese goods. My Golden Ear Triton Reference speakers and Triton One speakers are BOTH made in China (but they don't sound like crap).
"This is vile, hateful, prejudiced language, the wholesale, unconsidered association of Chinese manufactured equipment". My post was neither vile or hateful or prejudiced, you are trying to make something that isn't there. The preamp was a knockoff piece which is illegal everywhere except probably china. Get off your high horse.
@clearthink I don't think that is the case here the various preamps in question were literally billed as reproductions of famous preamps and are very inexpensive hence "cheap knockoff". The OP's continuing dissatisfaction with said preamps reinforces this. Sure there is good Chinese gear being produced but still a lot of cheap and cheaply made crap.
stereo5"Cheap Chinese knock off that will make your Jadis amp sound like crap. You need to spend at least a few grand on a preamp worthy of the Jadis. The Chinese crap you are looking at is just that, crap."
This is vile, hateful, prejudiced language, the wholesale, unconsidered association of Chinese manufactured equipment with crap when there is plenty of electrocrap manufactured in you're "Western World" that you believe has achieved some sort of unusual excellence and superiority.
mozartfan at this point I wish you good luck your mind is obviously set on what you want to do. I hope the Leaf is the preamp you've been searching for and perhaps selling the Jadis is not the worst idea. No point in keeping a high end amp and not surrounding it with gear that lets it show its best.
At this point, I'm not looking for Class A sound,,I made a bad move selling my Jadis Orch Refer, which had a amp + pre all in one.
I hold the idea that intergrated are superior to separates. But again, its my opinion. So I have to deal with what i have on the table, with no budget over $600. I drew a line in the sand. I'm tight on audio budget. I'm past 60, and starting to tighten the audio budget. The Leaf will be my final purchase..unless i can get a buyer for the Jadis Defy and put that cash into a Jadis intergrated,,,but thats all hypothetical. Got to deal with the now moment. I have Class A speakers SEAS Thor Class A CD Player Cayin CD17, with bugle boys 6922;s. Jadis defy7 Class A amp. The Ebay descrip says *Class A tube pre amp*. From the looks of the guys, she is nice, with those 6 nice caps , just waiting for Mundorf's. The Leaf is on the way, pulled the triger this morning, $600 (includes ship). Should be here next week. The Xiang arrived in 3 or 4 days!!! from china, DHL, quicker that my California ebay purchases. Now grant it, the other 2 chinese pres, did not have the advantge of biwire set up. My hunch says binding both outs together, somehow interfers(hampers FQ flow patterns) with the xover in the Thor's biwire set up. additionally , the Jadis's biwire output was *limited* by not utilizing that bi option. Not sure, So the Leaf will have the biwire set up, giving it full possibilities, nothing holding back. I will make a honest UNBIASED>fair>critque of the Leaf, with the cheap stock russian tubes (has 4 6922's) and rolling with the Amperex , which i have at least 8+ Amperex on hand, Bugle Boys. I noted how Bugle's made a nice pop in dynamics with the Jadis Orch Refer. ...,,I think this Leaf is a new offer, as the 2 ebay comments are both this year. It is based on the ARC LS model.
Cheap Chinese knock off that will make your Jadis amp sound like crap. You need to spend at least a few grand on a preamp worthy of the Jadis. The Chinese crap you are looking at is just that, crap.
@mozartfan I don't know anything about the Leaf preamp...but I do know that the little Schitt Freya+ that I suggested before is a very good preamp for the $$ ( friend owns one and drives his ARC amp beautifully!). Any reason why you would not consider the Schitt? ( except for maybe the name, LOL).
The Xiang 728 arrived, and after 10 minutes of Faith Hill, its going back, as one buyer on ebay wrote back after i read his comment/review on the CLASS A Single Ended tube pre , which he liked, and said he once owed the Xiang and felt it was flat = no dynamics. I quickly in less than 5 minutes, agreed. Its a cheap chinese preamp. What I did discover in the session, is that the Jadis is dead quiet,,all along it was the Lite LS9 (Jadis clone) that has ground issues, which i will give to my tech guy in baton Rouge to repair and sell in his shop, at whatever price, and he keeops some commission, + I will dump my brand new Cayin MT35 on hin to dump for whatever,,hoping for $400, paid $650+ $150 ship from china..The Xiang is going back and will put that $300 towards my final pre amp , the Class A LEAF AUDIO. Has 6 Leaf Audio caps, which i will swap out and place in Mundork's Supreme or Silver Oil. My Tech guy in BR liked the payout from the pic,but adds *not sure how it sounds*..also I learned from my painter who knows alittle about stereo's , says add 4 more spades on the biwire speaker cables from the Thor, as jumping both high/low together may not allow the FQ's/HZ's to brethe properly, besides the Jadis has biwire posts. So makes sense to buy 4 more spades (which are on order) and biwire. This may have flatened the repsonse from both preamps. Regardless, it does not subtract much, both are too flat for my taste, based on my 6 yrs experience with the Jadis Orch Reference (EI KT90's) which delivered like like vocals, sounds stage, It was like the band was playing right in the listening room.
So the Defy is dead quiet and this is indeed grat news. Can't reture the Xiang yet, as seller says he needs to give me a contact code to return,,,meanwhile the Leaf Audio pre offer at $475 is gone, now its not even $499, , lists now at $519 + $80 ship/china. I could wait for black Friday and get it lower,,,,,,at this point I'll pay the $500, as my hunch says , based on both ebay buyers writing back with thumbs up, ,,, My paypal is maxed, so I was hoping to hurry and return the Xiang,,but seems it may be another week before i can make the Leaf purchase. The Leaf has 2 outs, so finally i get to work in a sub,,which arrives tomorrow, a sub cabinet + Dayton 70 Watt RMS amp both from parts express, and a used, excellent condition Cerwin Vega 10 inch red rubber surround as the sub. SWEET. I stand by my opinion the SEAS Thor kit is the finest reproducion for music. I had the Philips 2 ways, from the early 1980's and reproduced excellent sound in that epoch,,,but next to the Thors, I could clearly hear their weakness.
I'll post a comment when the Leaf arrives. about 2/3 weeks from today. System will be Cayin CD17 has 6 6922's + new high tech opamps Jadis Defy 7 Bugle Boys front/EH KT90's power.. Speakser Thors, will possibly add new Mundorf caps to C2 and C3 anda new R2 resistor as per Madisound tech suggesion. With the Leaf Audio Class A pre has 2 AU7, 2 AX7;s , both pairs will be rolled to Bugle Boys, + caps replaced to Mundorfs, Supreme/or Silver Oil. Amazing this Jadis has sat in my room, with a sheet over it for all these years, and has no issues at all. This amp is most likely 15+ yrs , and is dead quiet. This beauty now sits on a bench shelf, waiting for the preamp, ,,,,,finally my journey for class A sound imaging is nearing victory ,,,,I can see Mt Everest peak just over the ridge,,,,
@mozartfan You just posted an interesting point. You have found yourself in a difficult position...because you acquired an excellent amp and spent $$ to do it, without realizing that the amp is only half the picture at best. I wonder how many folks have done exactly the same thing, blown their budget on the amp ( or the preamp) and had noting left to complete the picture. This is certainly one of the 'traps' with buying separate pieces. In your case, this has led you to incorrectly assume that the amp is at fault, when in fact the upstream gear is at issue ( some, or all of it...starting with the preamp).
OK Jon, let me try to explain this story. My Jadis Orch Reference delivered INCREDIBLE sound stage/dynamics, (highs a bit STEELY/harsh, a bit I said), as the KT90 EI Czech tubes live up to their reputation, BUT could not hold up as reliable,,unless tubes burn out/short after so many hundreds hours,,I used the jadis lightly on sound/only playing orchestra, no rock/jazz. So I could not find budget price EI's,,,, and so decided to sell the Orch , as i came into some $5K , as a gift,,noted the4 DEFY7 for sale on audiogon, , bought it in 2006/2007,,,everyone on audiogon mentioned I will need a *good pre*, I felt I could work around that and finda chinese tube on ebay,,bought a Ming DA MC7,,,after 1 minutes worth, i knew *huge mis calculation*, dumped that Ming Da at a big loss, pd $700, sold for $350..That was 2007. ,,yes pass, nearly, or more than a decade, sitting in a box. In 2018 I bought a Lite LS9, *clone of Jadis pre amp* (??!!! Big fat LIE), finally took both pre and amp to a tech guy here in new orleans to ck both out,,,1 month later says he had no time to * make repairs on Jadis Defy,* as his *reserach * shows the Defy has *terrible issues and needed major overhall*..I believed him,,at 1st,,then cked out baton rouge's tech studio, found only 1 with great google reviews. Drove up, and had Mark at Advanced Video ck it out,,3 weeks later, says he has it up N running....to my great surprise...got home, hooked her up,,,heard some slight ringing at opening all switches on pre + amp + cd player,,,not sure which had a slight tiny short,,(I think it is the Lite pre),,,brought back to Advanced,,Mark says all needs proper grounding and not to worry about the *miniscule at opening ON switchs), I agree, as the muisc plays, hum completely disapperas. Now I just bought a Xiang Sheng 728 for $300, which I have option to return. If this Xiang can not deliver at least 20%+ more dynamics , sound stage , make that 30% as the Lite is flat, and just aweful cheap chinese junk,,,,which i plan to dump on ebay for whatever (pd $700), , I bought also a Cayin MT35, as i thought I will sell the Defy and go with a intergrated, WRONG more, as the cayin MT35 is too weak to drive the SEAS Thors. So I will dump that at a huge loss, has 4 EL34's. Same seller as the Xiang Sheng, but can only return the Xiang as it comes from his California wharehouse, the Cayin shipped from china, Long, too long story,,shortened, is this My hunch says the Leaf Audio pre on ebay (with 2 solid reviews, both wrote me back and said its a *solid/good pre). That I will return the Xiang and buy the Leaf Audio , its a Clone of various pres, like has maranzt parts and also ideas based on Audio Reserach. Has 2 AU's and 2 AX's. ( I plan to replace with Bugle Boys and will bring the Leaf to Mark , see if he can replace the caps with Mundorf, Silver Oil. And now this is the end of my journey,,,UNLESS the Leaf does not pass my critical tests,,and I have only one other option,,buy the Cayin CS 10 off Ebay, guy says he can let it go for $1800, and will accept return. Its a besat at 50 lbs!!!!, has 4 6922;s. But really, don't have $1800+ $100 ship, for at least 6+ months. If the Leaf is a flop, and the Xiang is superior, I will repurchase the Xiang and roll the tubes and bring to Mark for upgrades. Which he may not agree on, as he says, alot of these so called *upgrades* are *snake oil.* He is of the camp, a good cap is a good cap, no such superior sound witha $$$$$$ Gold Silver Oil Cap from Mundorf, at least not to his critcal hearing. I may go Mundorf Silver Oil, or Supreme. And also will upgrade my Hovalnd caps in Thors to Mundorf Supremes, the C2,C3 and the R2, as per Madisound tech. I will report back when the Xiang is tested. Not even sure if I will need to roll the EH KT90's, to EL34's, as some claim the EL34's are the most muiscal tube around. But thats another $$$$$$. This hobby can really get expensive if one is not careful. ...
I am a bit bewildered by all your fast moves but one thing that is driving me crazy. You have a superb amp and finally have heard it sing. And yet you continue to throw a series of cheap nondescript preamps in front of it hoping for good sound. Instead of buying a bunch of different things, subwoofer, sub amp, new speakers, why not invest in a really good preamp?
HOLD ON, SELL is off. Yep, Just purchased the XIANG 728 tube pre, arriving next week, if a no go, will return and buy a LEAF Audio tube preamp. Will report back on all the new listening seesions. Both pres have dual outs, So I just bought a 10 inch sub cabinet, + a dyanco 70 watt RMS sub amp + a excellent Cerwin Vega 10 inch woofer. will let you guys know how the XIANG SHENG 728 responds. My hunch is RETURN and buy the Leaf Audio pre. paul new orleans
well i figured why not try to get the amp, pre , cd player up on a bench , instead of trying to bend over breaking my back, poor eye sight,,all discombobulated,,,so i did just that,,set the Jadis Defy 7 up on a bench with Lite tube pre Cayin CD player with high end op amps installed,,all i have to do is sway out the chinese 6922 for the Bugle Boys 6922 and hooked the speakers correctly BIWIRED,,, Found 1 jam cd, (as all my cds are classical) , found a Tina Marie best hits,,BAMMMM! Like majic, This Jadis Defy 7 sitting on my shelf now since 2007, is now finally SINGING gorgeous. UNREAL, Class A sound. Now all I have to do is upgrade at least 1 cap in my Tghors to the Mundorf silver or Mundorf Supreme and add in a W22 8 inch UNREAL. I will now order that cayin Pre amp Thanks For all the great tips to help me out.. I will keep posting as changes aere made,,,Tina sounds INCREDIBLE on this Jadis Defy with EH KT90's. Bugle Boys in the 4AX7 and Bugles in the 2 AU7's. Tina's voice sounds just LIVE. Finally i can give up my $20 computer speakers listening to past 10 yrs,,, WOW.
Hi George, Way over my head level of understanding. Good news is I just got back fromm my tech guy in Baton Rouge . The slight hum I heard out the right channel was mainly from the pre,,,,BUT/HOWEVER there is a MINISCLUE hum, in the jadis right,,,as i say only the vol on the powerless vol control is turned up to lowest muisc level, no one on earth can hear the hum = the amp is in PERFECT 10/10 condition. The LITE LS9 chinese tube pre (modled on the jadis JA200 pre,,or so they say,,has like 10 tubes) does have a hum,,BUT/HOWVER after 3 minutes warm up (which i did not allow for at my house,,I shut it off after 1 minute) the hum (lacking some proper grounding,,,= possible the brand new cheap $5 interconnects) the hum fromn the pre completely disapears)
I am His shop has a old 3 way witha a 15 inch woofer, The amp WORKD, 10/10,,I am hestitant to sell it now that i acutally heard this amp in performance,,and can not wait til my spade wire end post arrives fromk ebay so i can take the bi wire from each speaker, join them witha wire nut,,then takea single wire, hook up the spade end post to the wire and now makea single wire instead of bi,,as it is wayyyy toooo dif to twist 2 thick wires together and wrap it around the Defy's speaker post... So I havea ALOT going on,,but the GREQAT news is the amp has a perfect (slightest hum) bill of health,,and now i am about to makea offer on a big tube pre amp off ebay. I will test it out,,and seller mentions i can return if not a match..I will give him $200 restock fee for kindness. So the big Q is, are the old 3 ways with the 15 inch woofer a better match, = more efficient vs my King of all speakser, the SEAS Thor's with the exteeme demand = low efficiency??? maybe the speaker spades are in my mail box now,,,be right back,,,,,,no,,maybe tomorrow,,,I will only test the speakers when i get the copper speaker spade,,,I can not wait!!!! Guess I may sell my brand new CAYIN EL34 25 lb amp, just arrived, has a weird 220 plug,,,seller is sending a adaptor for my stepdown trans,,,,
If the Cayin 25 lb intergrated sounds OK = some bass, great mids, sweet highs,,I will keep the cain and sell the Jadis,,,all is ????, = open possibilites at this moment. But as i say, the jadis is really LIKE NEW as the Audiogon seller back in 2007 never used the Defy and i have not either,,so its reallya 10/10 brand new Queen of all Amps, The Jadis single mono block. I wil also mod my Thors,,,taking out the bottom W18 6/5 woofer and replacing witha a EXCEL (The King of all speakers =the SEAS EXCEL)W22, 8 inch woofer for a added few HZ's on the bottom,,and maybe addinga Mundorf Silver Oil cap , just 1, to the tweeter. Lots of plans,, all is ???? at this point. I was very concerned when i 1st heard the hum after arriving home last week,,,which is why i drove back up today to listen at the tech's table. He agrees the amp is 10/10 ,,,now of course to you perfectionist audiophile troops,,its not OK, as the hum, ever ever so sligyht, should not be there. I say, who really cares abouta hum so slight,,that when the muisc kicks in at vol level 1, the hum is IMPOSSIBLE to note. I am nota perfectionist audiophile,,i am only interested in life like sound stage. The thors deliver this image perfectly. Bass = check mids gorgeous, highs super clear , distortion free , with the King of all tweets, The Royal Millenium
The Jadis Defy 7 is not the amp I would recommend with these speakers, as if you look at the impedance and phase angle of your SEAS Thor MTM they are quite difficult to drive at 80-150hz and again at 3khz, https://ibb.co/Fm8mXwD
Especially when Stereophile said this about the Jadis Defy7 in their bench test of it:
If we adopt a more stringent 1% distortion limit for maximum output, the Defy-7 reached only 12dBW, 16W.
The picture was worse still at the frequency extremes—for example, the maximum power at 20Hz for 1% THD is 9.1dBW, less than 10W, though if some sort of visual clipping limit is adopted, 17dBW, 50W was possible. The situation was no better at 20kHz, where 10dBW, 10W was the continuous power limit for 1% distortion.
These results were repeated into a 4 ohm load (remember that this is ostensibly the 4 (to 8) ohm tapping on the output transformer). With both channels driven, the result was a loss in level of between 3 and 6dB, depending on the distortion criteria.
I understand the SEAS Thor are demanding, Yet my Jadis Orch Refer made great muisc with those speakers. I sold off the orch due to the EI KT90’s going bad, and replaced with EH KT90’s. saw the Defy up for sale in 2007 on Audiogon, and purchased. as I have no cash fora class A pre so for this reasion I am selling. am sure the amp is according to all the reviews, but its out my leauge to own. going back to intergrated, right where i started back in the old days. The Defy is for sale on my local cragslist, and will list it on ebay in 2 weeks, , start bid, no reserve $1K, 10 day list. time to move on...........
Using a valve amp on speakers that dip down to 3 ohm and which are only 86.5 db sensitivity is more likely to be your problem.No preamp is going to fix that.I would keep the Jadis and try some more efficient 8 ohm speakers.
There is a Jadis Orchestra Reference Integrated for sale on here from Brooks Berdan Audio. They are listing it for $3749.00 and they are taking offers. It's a brand new unit.
@mozartfan, Maybe you could explain why you continue placing blame at the Jadis’ amps feet, when you keep on describing other gear in your system that is failing...or has failed, ie the acquisition of the Marantz preamp. ( which BTW, I doubt would have been a great match up with the Jadis either!)
BTW, IF you still want a preamp suggestion for the Defy 7, I would suggest you look into a Schiit Freya +. They come in below the $1K threshold you have set and I think it would drive the Jadis well...and give you the sonic results you are hoping for.
Yes just arrived the Marantz Pre amp, , and was looking very forwrad to hearing the amp in great sound,,,sadly the pre arrived DOA. I requested a partial refund from the Ebay seller. I'm done, I will take the amp next week back to my Baton Rouge tech guy for a final ck, as i only picked up the amp from his shop, and did NOT ACTUIALLY LISTEN TO IT ON his preamp. I want to make sure this amp is good to sell. I will place it on Ebay open bid $1K Ship $200. any suggestions on how i can guarantee the amp to the buyer, will be greatly appreciated. I am a fair guy and want the buyer to be satisifed. Here I have only the tech guy in BR and can only hope this amp is in great shape. If the buyer was honest and he hardly used it, and i never used it , this amp should be NOS. But will have to rate it 7/10 only for AGE and NOT FOR USAGE. any ideas appreciated. Open bid $1K NO RESERVE.
mozartfan, when I owned it ( for about a year's time ) it produced quite more heat, than my 100 wpc Krell KSA 100. And, because of my, admittedly, high volume levels, microphonics was a big problem ( other tube products, as well, not just the Defy ). Another poster here, on your thread, who made a comment, briefly, but deleted his post, suggested using a passive preamp. The Defy would work well with a passive, and I am currently a big advert to passive preamps ( I love my Luminous Audio unit ). But, it still is a lot of amp, and the recommendation I have, is the same. Sell it. My best to you, Enjoy ! MrD.
No it is a MARANTZ 90's modle pre which is on the way. , The Onkyo was a intergrated, which i canceled purchasing. The Mitsubishi pre I also canceled. Even if the marantz pre produces superior sound over the bland flat chinese tube pre (I bought it as it mentioned it was a copy of the Jadis 200 pre curcuit, the trans in the Lite LS9 weigs about 1 lb = has no dynamics, no fidelity, no nothing, but does have 10 tubes in the design, which is another reason i bought it and was cheap at $600). <<Thanks for all the helpful ideas, but after pondering my situation, I plan to sell the Jadis Defy.. It is too heavy for me to move, and too big for my listening room. I started my audiophile journey witha jadis Orch Refer and now hope to go back to a Jadis intergrated. The Jadis Defy is too much for my needs. Sadly I never got to enjoy the big amp, but thats my mistake in not believing folks who mentioned I will need a good pre to bring the Defy to life. I will use a david Hefler 220 amp with the Marantz pre , until I can find a jadis intergrated, at a price I can budget.
I would wait until the Onkyo preamp arrives next week. I don't expect it to be a perfect match for the Jadis, but there are unexplainable things in audio and you may be surpsised at what you hear...Of course, don't spend your money on the Mitsubishi preamp...
Keep the amp and sell every preamp you have including the ones on the way use that money to buy a good used tube preamp on Audiogon, It doesn't have to be a Jadis. You made a mistake pairing a bad preamp with your amp, the preamp has a huge influence on overall sound quality.
So you bought the amp 11 years ago, what preamp were you pairing it with prior to the Ming-da? Have you ever gotten good sound in the time you've owned the amp? Also what speakers are you driving?
sic read I recall when i 1st purchased the amp both the seller and some AUDIOgon-ERS mentioned/suggested to me, that the Defy will require a class A powerful preamp to make the amp work. I did not fully believe and hoped i could work around that issue, I was wrong and this error will cost me. Thanks to the honest replies that I should sell the amp. Paul New Orleans
OK GOT IT. I do recall, either the seller of some Augonners mentioning , that the Jadis will need a great preamp, maybe a jadis as 1st choice, Well I do not have $6K++ fora used jadis pre. I am going to sell it, It sat quiet for the seller, as he had a Jadis JA 200 mono blocks. I did not use it, as the 2 cheap chinese tube amps do nothing for this amp. I am going ss intergrated until i can get some cash together fora used Jadis intergrated, like the DA50. Thanks for the honest fair and for real answers to my problem. I plan to sell it as $3500 and I will pay shipping. Audiongon and Ebay. 1st I will call the Jadis dealer in california, maybe they know someone willing to make a swap for a Jadis intergrated.
I had a Defy 7. One of the better tube amps I owned, or borrowed. Extremely high input impedance ( around 500 K ). Sounded great with matching Jadis preamp. There are straps under the chassis to get a good match between it and the speakers it is driving. A very complex amplifier. It went through several revisions, as I knew the importer, and got the scoop. My opinion : Sell the Defy, as you will not get it to do what it is capable of doing. I 2nd stereo5, as you are wasting your time and money on those preamps. As far as you coining the phrase " shoot out " in 2000, I, and my audio buddies and partners, have been doing shoot outs, and using the term, since the late 60s. So, I am sorry to burst your bubble. Maybe you can become " coined ", as being the 1st individual, to use a cheap solid state preamp, with a Jadis Defy 7 ( I am sorry, I had to ). Enjoy ! MrD.
You are wasting your time with those cheap solid state preamps. That Jadis amp was very expensive back in its day. at least 20 years ago. You need a good tube preamp, and no cheap preamp will make your Jadis sound any better. The Mitsubishi is cheap mid fi as is the Onkyo. You set yourself up for failure the way you went about this.
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