2. amps-preamps
  3. 1159138051

ARC VT100MkII

I'd appreciate if any of the VT100MkII owners can share their thoughts about this amp.

I am considering this amplifier.
It will be run via balanced cables with the rest of my ARC components - LS-25MkI preamp and CD3MkII cd player.

Cabling is Acoustic Zen Silver RefII from CD3MkII to LS-25 and Matrix RefII from LS-25 to amp. Speaker cables are Acoustic Zen Satori Shotgun.

Questions I have about the VT100MkII amp:
1) What is its sonic signature? Is it relaxed, laid back, forward?

2) How hot does this amplifier get?

3) How audible is the fan noise from about 7-8 feet away at low volume listening?

4) Will it manage to drive my B&W N803 speakers?

5)Any issues such as reliability aside from re-tubing?

I listen mostly to rock, blues, jazz and some classical. I like natural, dynamic presentation, but not harsh, analytical or forward sounding. Imaging and soundstaging is important. Good bass is a MUST.

I have listened to this amplifier before and the only think I remember is that I really liked it but it was long time ago and it was driving speakers that are easier on amplifiers than my N803s are.

Thanks very much for your thoughts!
128x128audphile1

Showing 2 responses by woodburger

woodburger's avatar
woodburger
143 posts
 
Hot, but it vents nicely.

Fan wasn't noisy to me, but I had it on a separate circuit so I could use the PP (see below) and likely had it running a little slower than stock.

Retubing a pain.

Sound quite good, though somewhat less dynamic than I'd like (into Wilson WP 7s). PS Audio P600 helped before I moved and got dedicated power outlets; then I didn't miss the PP. Plenty of bass. Compared to the Nuforce 9s which I replaced it with, the ARC sounded compressed dynamically.
woodburger's avatar
woodburger
143 posts
 
Check out their site. Not really digital - I think analogue switched digitally.

As they say: "The Reference 9 SE incorporates an improved power supply board with a low-ESR capacitor bank. Further enhancements include a separate switching power supply for the analog front-end, ..." and from the 6Moons review: (this) "amplifier technology is based upon the principle that a power oscillator can be modulated by an audio signal to produce an amplified audio signal obtained with a reconstruction filter but without the bandwidth limitations of a fixed frequency carrier-based conventional PWM control. It uses a high-performance analog modulation technique and a close-loop control system. Therefore NuForce refers to its audio amplifier as analog switching amplifiers."

One of the more pleasant surprises I've had in this hobby .
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