another rookie question - preamp or or power amp


I have a decent integrated amp ("decent" - to my ears). SS, 50Watts to 8 Ohms. It  has a preamp output. 

I have been looking at used power amps and preamps in the 2-400 dollar range.  

For example: the Parasound 2125 power amp, the Parasound P3

This is an OR question. Which choice will yield a better improvement,

1) if I put a preamp before my integrated so the integrated acts as the power amp

or 2) if I use my integrated as a preamp to a power amp?

It's also a choice to sell my integrated and save up until I can buy both a power amp and a preamp, but obviously I am itching to try one of the above options. 

My room is 15x13 so I am not sure I need a big power amp (big: 100Watts?)

 

grislybutter

@coltrane1 yes, several people suggested that. However I went down a path of buying inexpensive stuff that I am now trying to match with a higher quality component. (My wife thinks I am hoarding but I have seen my neighbor's garages.)

It’s a fun journey, I am not in a hurry, I have already been very blessed with hardware offered and loaned to me from generous members here. I could also just sell what I have and buy a better integrated. I never had a preamp so I was curious what it would do (apparently a lot).

At this point I don’t think my budget is the biggest issue, figuring out what would improve my current system is.

The size of the power amp you need has to do with the efficiency of your loudspeakers, how large the room is, how loudly you want to play your music, and how much power your loudspeakers can safely take.

If you can use your existing integrated amp as a preamp, then get a power amp first.  The amp you quote, the Parasound 2125 power amp, is NOT available at $400, so why even talk about it?  There are a number of good value amps at $400 or less on US Audiomart.  Why not go there to look for one?

OR for the same $ our intrepid OP could get a GAS Son of Ampzilla and get a nice robust linear power supply vs. SMPS … 48 v or no…

Just my opinion…

 

i think it is the best idea... And at the lowest price...

It can be possible to even integrate a tube pre-amplifier in these mono amp i think...

The Fosi headphone amplifier i bought for peanuts price , the Fosi sk01 + 3 tone controls is a steal...

It is not chinese junk ... I use a tube low cost pre-amp with it the Douk P2 at peanuts cost too which i use also for my near field active speakers ... Very good sound ...

It seems audio china is no more junk only ...

For a bit higher price than what i paid  ( 60 bucks ) you could have a very good tubes pre-amplifier under 200 bucks ...

 

I would go pre out from your IA, into two Fosi ZA3’s run in Mono mode. Get the 48V, 5A power supplies. The two will run you about $300, and I believe you will be majorly delighted with the power and sound quality. These 3255 chip amps are amazing, and I believe they will be the next big thing in terms of amplification.

I would go pre out from your IA, into two Fosi ZA3’s run in Mono mode.  Get the 48V, 5A power supplies.  The two will run you about $300, and I believe you will be majorly delighted with the power and sound quality.  These 3255 chip amps are amazing, and I believe they will be the next big thing in terms of amplification.

@jnovak @unsound 

it seems to be opposing views to me - no preamp vs best preamp but I know the devil is in the details.

Thank you for all the feedback, it gives me a lot of different options and approaches to try!

You should save the $400 and continue to add to it. Your room is normal size. My room is the same size. Would I prefer to have a larger room? Absolutely, but we’ve down sized due to retirement. I’d recommend acquiring a system to fit your room rather than simply building a system that doesn’t fit your room.

You can acquire lots of used gear, many at excellent prices if you diligently search. But for me I’d concentrate on saving in order to acquire gear that’s worthy of your room.

You'll never regret having the best preamp you can afford. If you aren't passing the best signal though a decent preamp the best amp in the world won't do you any good. I've found amps that were better than I though all because I'm using a PS Audio BHK preamp.

@grislybutter , depending on your sources, and with careful choices, you might not need a “preamp”.

@lanx0003 I have been looking at the Parasound 2125 at an auction which is why I mentioned it

@shtinkydog close! I will message you, I am already experimenting with the higher quality sound thanks to a generous member

 

@grislybutter Are you in L.A.? I have a P3 for FREE if you are.  It's old with a scratched top, but it works!  And the price is right. 

For my secondary system, I use the Parasound NC 2125 V2 with Zpre3. Absolutely love it.  They work together with great synergy.  You did not disclose what IA you have but I believe Parasound 150 wpc will drive your speaker better than your 50 wpc IA as the amp.

@grislybutter

I already have had a lot of help here and I think I will be on the right track.

Best of luck, then, moving forward!  

 

@stuartk I understand. Given how "budget" my current amp is, it could be an improvement though - or so I thought.

I already have had a lot of help here and I think I will be on the right track. 

Preamp has controls, sometimes a phono stage, sends line level.
Power amp takes line level and ramps it up to speaker level.

You need both, though they may be combined in one chassis (integrated amplifier).

 

@grislybutter

Unfortunately, upgrading "one tiny step at a time" is not a strategy that is likely to keep you satisfied in the long run. I dare say, everyone here, at some point, has experienced situations when we wanted to upgrade but simply couldn’t afford to spend what it would take to make a real improvement. 

It’s not clear to me which aspects of your system’s presentation you’re seeking to improve. If you simply must spend that $400 now, it’s possible a power cord upgrade or vibration control could yield some noticeable benefit, depending upon what your goal is.

 

@curiousjim 

Wow. Exactly, Thank you!

I have been looking at the different combinations and wondered why some integrateds have the main input and the preamp our and then connected with a dongle vs. just the preamp. That's how ignorant I am. I don't have a main in.

 

@grislybutter 

Hey Gris,

Your question may already have answer.  Double check if the preamp in your integrated is always in the circuit.  Meaning,  if you put another preamp in the chain, it will still go through the preamp in the integrated.  My Hegel, for instance doesn’t have a dedicated preamp input and will run the external preamp through it’s preamp and then to the amplifier.

All the best.

I had 2 very good integrateds amps, the KRELL K-300i and the CODA CSiB, I went separates with CODA 07x + CODA #8 replacing the CSiB. I also went Benchmark LA4 + KRELL Duo 175XD replacing the KRELL K-300i.  While the integrated were very good and I was more than happy with them. The separates were much better to my ears and I will not go back to an integrated.

The only time I took a penalty going separates was going from a $7k RAAL VM-1a tube amp (with preamp) to a Schitt Mjolnir preamp ($1100) and Schiit Aegir amp ($800). If the VM-1a was 100/100 the Schitt stack on my headphones was 90-95/100. Very close for a lot less money. I am listening to them as I write this and it is a killer combo.

These days when I need some audio gear I always think about checking out Schitt to see if they have a solution. It will most likely sound very good and be cost effective.

Here’s a bit of a change in direction from what people are suggesting.

 

I would consider an Adcom GFA-545 power amp.

 

Inexpensive to buy. Well designed circuit. Big power supply. 
 

I picked one up so I could have a higher power amp on hand for driving my DIY speakers. All my other amps are below 30w.

 

For the couple of hundred bucks you’re gonna spend on it, it’ll provide a lot of joy.

@audiotroy

,,,what matters is the quality of the parts

True, but it’s worth noting that if you took the preamp section out of a good integrated amp, gave it it’s own power supply and enclosure, and used it to power the same amp, it would have some benefits over the integrated version of the same components.  How much of a difference that can be heard is another variable by itself, but there's definitely that potential.

There’s never a free lunch though...separates require a separate set of RCA connectors, which can introduce a new source for degradation if not done well. The good news is that it’s not hard to do a competent job of picking that cable.

the idea that separates are always better is just wrong

 

what matters is the quality of the parts

 

if you are on a limited budget lookat an integrated from a high end company

the nuprime ida8 is fantastic piece

Dave and troy

audio intellect NJ

40 year industry veterans

I haven't approached them with an offer lower than the posted price, but good idea!

That's hwo I wound up buying the SLP90 I alluded to, and he readily accepted the offer, so I think I should have low-balled him even more.  Ha ha.

If you plan to get one good integrated amp and be done with it, an IA is a good option. If you figure to continue your journey to other levels, the move to separates makes the most sense to me. All of the best systems I’ve heard had separates. At a certain level the limitations of an integrated will typically become apparent at some point. (granted I haven’t heard all of them, or even the best of the modern ones, but the physical and electrical separation, along with separate power supplies is a benefit...at some point, it’s a benefit that can be heard) It really depends on how far you want to take things......which is often an unknown until you get there! 🙄😉

I go to Stereo Unlimited once a month or so to clean records. And they do have a lot of nice used gear. I haven't approached them with an offer lower than the posted price, but good idea!

Also…. those in San Diego looking for used gear would do well to troll thru Stereo Unlimited from time to time… hundred or so used components at any given time

Not exactly Craigslist pricing…. but often close… and they consider offers….

@immatthewj I did think about buying a preamp from the big retailers for around a $1500 on a credit card. I think it's a good idea actually because it would show me if there is a difference. The downside is that once I return it, I would have to go for an older version of it, because the latest one would still cost more on the used market. E.g., Parasound P3 vs P6, but still, it would get me going.  But your advice is so far the best one, for my limited knowledge and budget.   

Frankly, i’ve built many amazingly good systems around a lowly NAD 3020 A Integrated and eventually adding a more robust power amp….. BUT by putting the bigger $ into the transducers ; cartridge and speakers.

One such combo: Denon DP-47F > Grado Sonata > NAD 3020A > Vandersteen 1’s

BUT i understand the itch to try and learn by doing….

Lets coordinate for loan of a tube Belles preamp, so you can evaluate the change, scratch the itch and not be out any $…..

Jim

 

. . . to relate my own limited experience, I got into separates in '94 and it was an immediate entrance down the vacuum tube rabbit hole.  Except for the preamp.  Anyway, since then, I have only owned three different tube amps (I still own two of them) and 3 different preamps (and I still own all three of them), so I am not trying to come off as the know-all/be-all last word of wisdom.

My first upgrade (it was an amp ugrade) was a major equipment upgrade.  Definite expansion of width and depth and height of soundstage . . . but still sort of missing something that I thought/knew must be out there.  At that time I was using a B&K digital HT (Dolby Prologic) pre. It didn't sound bad, it didn't sound good, it just sounded. I came across a real affordable deal on a VAC two channel preamp with a pair of 12AX7s from Audio Advisor so I ordered it and I truly WANTED it to sound good.  It didn't.  Nails-on-a-chalkboard.  I sent it back.  In '99 I came across one of the few local dealers (he no longer exists as such) who had a used and wierdly modded Cary SLP90 for sale so I auditioned it for a weekend.  It had one of the six tubes basically out, and the cabling the dealer sent me home with (an adapter to go from RCA out to balanced in on the pre) was totally wrong, but despite all that, and the fact that all of the above made it sound like hammered crap, it truly sounded musical.  Based on the changes I felt I was going to have make, I made the dealer an offer that he accepted.  I replaced the tubes and got the right cable (balanced out to balanced in) installed, and it was really the great sound I had wanted.  (I later sent it to Cary to undo some of the previous mods.)

Down the road I changed amps again, not because of sonic quality but because of reliability issues, and about three years ago I saw what I thought was a decent price on a preowned preamp that I had always sort of been lusting for (plus the fact that I thought my SLP 90 was sounding tired), and the most recent new to me preamp I put in my system did impart sonic differences--not as sweet and warm as the preamp it replaced in my system, but more detailed and more "spacious" (if I dare use that word).  A larger sonic presentation.

Anyway, TMI I am sure, but this is what I have personally experienced with different preamps and amps in my system.

grislybutter OP: If looking for an amp only, take a look at a Vintage Denon POA 2200, if you can find one or an Adcom GFA 555.  They are around your price range used and in a different (higher) league than that Parasound. No offense to you or anyone, but Parasound is geared more toward home theater than hi fi. 

I had always thought that conventional wisdom dictates that "getting it right up front first" yielded the most notable sonic improvements.  And by that logic, the preamp section would be the place to start.

Is there any possibility to try before you buy?  Or to possibly buy from some place like Music Direct and return if things don't work out like you want them to?

thanks OP ...

I prefer the look of my other Sansui AU 7700... But i use it no more for now ...

The alpha 607i is a notch over it though in all aspects save flexibility...

It was so amazing that he drives better my headphone K340 than one of the best tube headphone amplifier on the market ...It takes me minute to compare because he beat it on the spot... I never imagined that an headphone out of a 100 watts speakers amplifier will beat a top tube headphone  amplifier with not even a comparison because i lost near 300 bucks in this trial comparison ( save the ratio noise /signals was better on the tube amp because his separate linear power supply was a top notch one). but all others characteristics were better with the Sansui , for example the out of the head impression, the timbre, the deep bass the imaging and soundstage ... The alpha was the top of the Sansui history ... mine is only the first basic model ... Imagine the rare top one existing only in Japan at high price even after 25 years or more ... In my headphone it is evident that the sound is tube like even if it is an S.S. amp... The best realistic timbre i listen too speakers included ...

@mahgister the Sansui looks awesome!

 

thanks @ellajeanelle I was hoping to get one component for about $400, to upgrade and then later on upgrade the other component

At your budget, I would get these: Kenwood Basic M1 Stereo Power Amplifier and Kenwood Basic C1 Stereo Pre Amp SET | eBay

I owned them when they first came out in the 80’s and doubt that you’ll find a better sounding combination at that price. They were highly revered in the audio community at the time. The variable loudness is a great feature also. The Parasound that you are interested in has a quite high THD (total harmonic distortion). Not in the same league in my humble opinion.  I hope you find what you are looking for.

Knowing what i know now i will go with separate for speakers or active speakers with preamplifier + headphone out ( which is what i own ) ...For many reasons ...

Flexibility, tube -S.S. combined, tone controls equalizers addition , top preamplification stage superior to most integrate at some price point ...

Also upgrading scale is easier with 2 pieces than one ...

And i own a top Sansui alpha 607i integrated where all is very good...but i did not have the model upscale Sansui where pre is separable from the power section alas!... I use it only with my headphone now anyway which are impossible to drive well with most headphone amplifier if not all ... I know i tried for one day with one of the best tubes headphone amp existing and i fail ( no comparison at all) and return back to the headphone out of the 100 watts Sansui after a heavy lost of money ( almost 300 bucks) ...

 

@audphile1 as I wrote above it’s a 2 channel denon receiver, from the 90s, with a preamp out. 50Watts into 8Ohm

@knotscott I am trying trying trying the separates route but everyone pushes back :)

@dekay thanks!

There are some really good integrated amps, but there are advantages in going with separates too.  Which is better is a variable...it depends on the particular component in question.  If you get another integrated, it could be an upgrade, or it could be a sideways step.  Ultimately, I opted for separates and have never regretted it.  There's a lot more flexibility with separates, and the physical and electrical isolation is a plus.  

@mahgister Merry Christmas to you too!

@ozzy62 right. I know it won't buy much. I thought a Parasound 2125 power amp, the Parasound P3 would be an upgrade.

@mesch it's a Denon receiver. It has what I prefer, it's 2 channel, no phono, with preamp, sounds great. I am looking for a little warmer sound and power = more effortless mids

@audphile1 I see. I don't think a used Hegel H190 will go under $3000 in the near future, I checked hifishark. That's almost 8 times my budget. 

I guess I can conclude that for my budget I can't do much. Still, I was curious if preamp or amp would yield the bigger improvement. 

Another consideration is, I sold some old gear, I have about $400, if I don't use it, it will be gone soon. A pipe will break, a medical need or emergency trip will arise, etc. it will be used for a necessity  

Thanks again everyone!

What is your current integrated?

Do you feel the need for more power? 

Maybe just looking for a different sound?