User reviews of our new Fet Valve 600R & 400R amplifiers

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Mike-48

Re: User reviews of our new Fet Valve 600R & 400R amplifiers
« Reply #160 on: 19 Jul 2017, 07:45 pm »
Yesterday, a friend came to listen who's a professional mastering engineer. His unforced comment about the sound: "I'm jealous."

Photo of the system with AVA Fet Valve 400R and Janszen Valentinas:




 

LarryRS

  • Jr. Member
  • Posts: 13
Re: User reviews of our new Fet Valve 600R & 400R amplifiers
« Reply #161 on: 19 Nov 2019, 07:43 pm »
Hi all,

After reading through this entire thread and all of the reviews I could find, yesterday I ordered a new Fet Valve 600R.  It will be used in a system where the primary source is a VPI Prime with a Hana ML cartridge feeding a Bob's Devices Sky 20 transformer to a Vision Q phono preamp.  The Vision Q connects to a Rogue Audio RP-5 preamp.  The speakers are Magneplanar 3.7i's that are crossed over at 35Hz to a pair of MartinLogan 1100X subwoofers.  The 600R has some big shoes to fill - it will be replacing a Bryston 4B SST2 amp which I consider a fine amp, especially for Maggies.  All of the information I could find about the Fet Valve 600R made it a pretty easy choice for me but, in truth, it is the reputation of AVA, and my direct dealings with Frank and others, that sealed the deal.  There are few audio companies out there that offer the value that AVA does, and I can think of very, very few that have maintained a standard of excellence in the same league for such an extended period of time.  I'm greatly looking forward to getting my 600R and will certainly report my impressions to this thread once I've had the opportunity to form them.

LarryRS

Brad

Re: User reviews of our new Fet Valve 600R & 400R amplifiers
« Reply #162 on: 19 Nov 2019, 09:21 pm »
Yesterday, a friend came to listen who's a professional mastering engineer. His unforced comment about the sound: "I'm jealous."


Nicely treated dedicated room!

gryphongryph

  • Jr. Member
  • Posts: 21
Re: User reviews of our new Fet Valve 600R & 400R amplifiers
« Reply #163 on: 2 Feb 2020, 06:34 pm »
Larry, how do you like the amp ?

LarryRS

  • Jr. Member
  • Posts: 13
Re: User reviews of our new Fet Valve 600R & 400R amplifiers
« Reply #164 on: 2 Feb 2020, 07:09 pm »
Larry, how do you like the amp ?

Haven't really finished evaluating yet but I do have a couple of comments I can share.  Right now, based on initial listening tests, the Fet Valve has supplanted the Bryston 4B SST2 in a system with Magneplanar 3.7i speakers. The Bryston then was compared in a Magneplanar 1.7i system to a Parasound A21.  The result was that the Bryston replaced the Parasound.  I still have much more listening to do before impressions are finalized.  I heard Sheku Kanneh-Mason in concert the other night and was planning on listening to his "Inspirations" this afternoon to get a better handle on the sound.

LarryRS

  • Jr. Member
  • Posts: 13
Re: User reviews of our new Fet Valve 600R & 400R amplifiers
« Reply #165 on: 12 May 2020, 09:44 pm »
Below are some updated impressions on the sound of the FET Valve 600R in my system.  It is currently in a system with Magneplanar 3.7i's where, as I mentioned previously, it replaced a Bryston 4B SST2. My first impression when I substituted the AVA for the Bryston was that I had lost some high frequency detail. But as I kept listening, it seemed that what I was hearing sounded more natural than it had. I was fortunate enough to attend a live Sheku Kanneh-Mason concert right around the time that I was comparing the amps. The sense of more life-like sound (for lack of a better term) was very evident on recordings of his cello (I had bought some of his recordings at the concert). A fellow concert-goer, who also happens to play cello, agreed - pointing out to me that the 600R sounded more natural than the 4B SST2 before I made any comment about my impressions.

In a lesson in system synergy, maybe, another comparison was made by swapping between the Bryston and a Parasound A21 in a system with Magneplanar 1.7i's. Here the Bryston's high frequency balance, which had seemed a bit too much with the ribbon tweeter 3.7i's, meshed very well with the quasi-ribbon drivers of the 1.7i's.

LarryRS