Impressions of the BAT REX


Category: Preamps

I am starting this as a thread instead of a review in hopes others will contribute.
I thought some of you might like to have another take on the BAT REX preamp.
I do think that M. Fremer did a nice and accurate review of the preamp and would refer you to that review for consideration. I have been into this hobby for over 30 years but still do not do well with audiophile catch phrases so please take that into consideration. Of course, we all have our preferences and biases on our way to reproduced musical nirvana and so my listening observations will likewise be biased. I do not participate much but enjoy reading the threads on Audiogon. I admit to being taken aback sometimes when I see others giving dogmatic opinions, e.g. when I read a recent answer by someone I respect and enjoy reading who said that one (equally respected speaker as compared to another) was better “hands down”. Different, yes. Prefer one over another, yes. Hands down” or “no contest”….hmmmm.
So off of my soapbox and on to the REX. I do like BAT preamps and owned a VK51SE before the REX. I did like what the 51SE did in my system and could have continued on with it for many years. The REX, however, is a whole ‘nutter matter, altogether. There are some distinct family resemblances. The control module has the same menu and functions as the 51SE and the appearance is essentially the same- on the outside.
Both modules have nicely engineered fit and finish and give the distinct impression that great care was taken in both design and manufacture. To the sound:
My system is very resolving and sensitive to even minor changes in setup, positioning,
tweaks and equipment both upstream and downstream. With this in mind, the REX is without audible flaw to my ears. I guess I gush as much as others over equipment that produces the positive changes in music that I enjoy hearing and so consider me gushing.
The REX is very, very quiet and my speakers are 108dB efficient. It does dynamics exceptionally well and transient attacks are many times better than the 51SE and at times (good) scary, regardless the type of music. Bloom? in spades. Glare? nada. Soundstaging? top notch. My wife asked me to mute the sound more than once because she thought someone was in the room and she ain’t the paranoid type. Microdetails? hearing things that I would swear were not on the recording, and sorry that I had missed before although a lot credit has to go to the Raven TT and Air Tight PC-1 . Yet, it still comes through on CD’s. Too bright? no way. Evenly balanced across the spectrum? excellent. If there was a couple things that I would have enjoyed more about my 51SE is that it could have just a bit too much lower midrange/upper bass energy and perhaps a little too slow on transients and then release. Not with the REX. Bass authority? authoritative. Sheen over the treble? –No, “sheenless”. Dark? No way- my wife called the sound “rich” and that is her highest compliment and not “rich” as in too much chocolate icing. Pace, rhythm and timing? Now here is where the REX took a giant leap over the 51SE and is just world class IMHO. If it doesn’t have PRAT, I’m probably not going to like it. It does. This machine just got it all right by me. I considered several other preamps, whittled it down to three and bought the REX. Are there other world class preamps out there? Yes! Buyer’s remorse? None. The BAT guys got this one sooooo right. Bullseye. Are there any drawbacks from my perspective? Yes, they will probably come out with a REX II sometime –but I don’t know why. Oh, and a backlit remote would be nice. This one is a keeper. Disclosure: End user/audiophile/music lover only. No connection to any manufacturer.
inman29
So my dealer and I put my other 75SE back in today (back to my BAT VK 150SE's) Have a few hours with everything warmed up now.

I also think my Maxx 3's are still breakin in and changing a lil, definately for the better.

The VK 150SE vs the VK 75SE: The 150SE's definately have a blacker background. Better textures and timbre. Better dynamics and more "ease", especially on complex stuff. However, doesn't seem as focused as a single amp. The Maxx 3 is very revealing.

I am still wondering if a REX + VK75SE is my best route.

I do like the BAT sound on the pre and amps so far. Thanks to everyone for commenting! I am thinking (hoping) a REX is in my future :)

I just want to be sure, I've kept my 50SE/51SE for 10 years almost...guessing the next pre is at least that long!
For me the BAT REX makes listening to music a much more intimate experience...real close up and personal.
If you guys like the Rex Preamp then you absolutely need to hear the Rex power amp. Hands down one of the best I have ever heard. The man with the Wilson MAXX's you need to hear the Rex on your MAXX's. I will guarantee that people where you work will come looking for you because you will be at home with a ice bag around your face trying to ease the pain from the silly grin on your face. This amplifier is that good and for $15k you should be arrested for steeling it from your dealer. It has to be about the most revealing amplifier I have ever heard.
Just wanted to add to this thread. I have been using the REX preamp for about two years and agree 110% with Inman29.
Also, when paired with the REX amplifier, as good as I have heard in any price range. I have used this combo on three different speakers I know very well and they all went to another level.

Hi all,

Just came across this thread as a result of Tom's recent post...

Fully concur with each poster's characterization of Rex...hope to have some in-house exposure/experience with additional well-regarded pre's for edification ;-)

Has anyone auditioned other vacuum tube current sources: 6H30 with X-PAK or 5881? Love to hear your thoughts if you have!

Ah, RexPower...I'll take four :-)

Best regards,

Sam