Vfet / SIT Amplifiers

First Watt SIT-3 owner checking in. Well, it has limited power but it sounds bigger than suggested by its spec sheet. It sounds more like a tube amp than a SS one, with a lot of dimensionality, super staging and air. Overall balance is warm and full. 

If you pair this with the right speaker, I can imagine that it will make the owner very very happy. I have the AGD Audion monoblock on dealer loan at the moment. It has very similar characteristics, except much better authority and power in the bass. 

Pass Labs SIT amps are very appealing.
@ericteh  thanks for posting your impressions! 

The warm and full sound seem to be consistent across most vfet amps and the resemblance to the "tube sound" is not by coincidence since the SIT I-V curve characteristics are similar to those of a triode.

I cherish my vintage SIT amplifiers and C-1, the only Vfet preamplifier, and put them through rotation in my listening space. I have most of the SIT amps ever made by the five Japanese manufactures from Japan (except the newer B-1a from Digital Do Main)

One of these days I will look to build a Pass design SIT amplifier, as I have a few transistors that can be put to better use than to rest comfortably in my storage bins.

The list of my curent SIT Amps collection:

Yamaha B1, B2, B3 (C1 preamp)

Sony TA-N7, TA-N8550, TA-5650

Victor (JVC) JM-S7

Sansui BA-1000

Lo-D (Hitachi) HA-500F

@ericteh ,

I now have a First Watt SIT-3 in my room right next to the other Vfet amps :)
I concur that it has great finesse and yes, it is a low gain amplifier.
The low gain is not a problem if you ran the SIT-3 with the proper preamp and efficient speakers.
I have the SIT-3 hooked up to a Yamaha C-1 that can push out like 3v, For speakers I am using Yamaha NS-2000 that are 90dB+ .
The all vfet sound of the preamp and the amp is addictive. An excellent match for the Beryllium drivers of the NS-2k..