150M Power Amplifier
The 150M is unlike any previous amplifier design you have seen from Audio Research. First, it is based on a truly modular design, with a main chassis capable of housoing up to seven individual power amplification modules, each rated at 150 watts continuous into 8 ohms, 300 watts into 4 ohms. These power modules employ a unique switching amplifier that modulates its frequency with amplitude/power demand - yielding a highly efficient circuit that generates very little heat. It's called a "Class T" design, and it makes the 150M ideal for any imaginable custom-installation application. Further, the modules are a plug-in design that attach internally via multipin connectors, so modules can be added or replaced as needed by a qualified technician.

MSRP:
$0.00 Product Rating:
  5 of 5

From 3 members

 Classic 30
Hybrid Vacuum Tube/FET Power Amp - 30 watts

MSRP:
$2495.00 Product Rating:
  4.88 of 5

From 8 members

 D100B
Solid State stereo power amplifier. 100 watts per channlel. 46llbs.
Built from 1977-1980. The b model was a upgraded version of the D100.

MSRP:
$0.00 Product Rating:
  5 of 5

From 1 members

 D400MKll
200 watts

MSRP:
$5995.00 Product Rating:
  5 of 5

From 8 members

 Reference 210 monaural
Following the successful introduction of the Reference 610T, it is time for a more affordable, compact amplifier to fill the void left by the discontinuation of the VTM200 and REF300MKII. We are pleased to announce the introduction of the new Reference 210 monoblock, a product which will allow a greater number of music lovers access to the Reference series of amplifiers.

The Reference 210 presents a familiar yet distinctive appearance. The chassis is enclosed, with a thick front panel the same height and width as the VT100/VTM200, but with a vacuum-flourescent display screen like the one featured on the REF3 and REF610T. The chassis is 19.5" deep (plus handles) and has an internal frame like the 150M, with a one-piece ventilated cover that wraps around the top and sides. The front panel is available in Natural or Black finishes.

The vacuum-flourescent display has the same functions as the display on the REF610T, but they are addressable only through the handheld remote control. Functions include the choice of six levels of illumination, plus off; bias measurements for each output tube; A.C. line voltage; logarithmic, scalable power output (0-10, 0-50, 0-100, 0-200 watts); and total hours of tube use.

The internal layout is all new, with the main circuit boards mounted horizontally instead of vertically. The transformers are mounted on a raised central channel running front to back; on one side of the channel is a large circuit board containing all of the audio stages, and on the other side is a large circuit board with the power supply, contributing to a very clean and attractive appearance. There is a small Papst fan mounted on the rear panel to circulate air over the audio stages. The 12V D.C. fan runs continuously at a fixed low speed whenever the amplifier is powered-up.

Power output is 210 watts continuous. Like the REF610T, the REF210 is based upon a push-pull, fully balanced vacuum-tube circuit running in partial cathode coupling mode, utilizing three matched pairs of 6550C output tubes. The REF210 uses two 6550C driver tubes, each controlling three output tubes operating in unison. The input stage uses direct-coupled JFETs, followed by a 6N1P vacuum-tube amplifying stage. As with the REF610T, the biasing system is very simple, with only two bias adjustments.

Power supply energy storage is a monstrous 787 joules, three-quarters the size of the REF610T. (Compare that with the REF300MKII's 448 joules.) Shared with the REF610T are new proprietary coupling caps and extensive film-cap bypassing of all electrolytics in the power supply. There is tube regulation of the input stage, with six additional solid-state regulators. Power supply rectification is solid-state with a total of seven regulators. The massive, custom output transformer is an ultra-widebandwidth design: the frequency response of the REF210 is an incredible 0.5Hz to 240kHz (-3dB). Also, as in the REF610T, 50% coupling of the output st

MSRP:
$0.00 Product Rating:
  0 of 5

 V140 Monoblocks
Hybrid tube/FET mono power amplifier. Balanced inputs and a soft turn-on feature.
(4 matched pairs) KT90 power output (Also takes 6550 and KT88), (2) 6FQ7/6CG7 driver
Unlike many of the later ARC's the V140 uses the tubes powered in Triode. Circuit uses very high quality components including E-Core output transformers

MSRP:
$9000.00 Product Rating:
  5 of 5

From 1 members

 VS110 Power Amplifier
The chassis, circuit layout and feature set of the VS110 are almost identical to the VS55, but scaled up to accomodate the greater power output. The chassis itself measures 17 1/2" W by 19" D, and features an anodized, natural-finish top plate labeled with tube location/type, output-tube bias access points and the inset Audio Research logo. The chassis front holds a rocker-style power switch and green LED "on" indicator. The chassis rear provides the 0-4-8 ohm 5-way binding posts, voltmeter test points for setting bias, a 12V in/out trigger and a detachable 14-gauge A.C. line cord with IEC socket.

MSRP:
$3995.00 Product Rating:
  5 of 5

From 1 members

 VSi55

• Utilizing microprocessor-controlled relays
• High performance input relay
• Partial cathode-coupled

MSRP:
$0.00 Product Rating:
  5 of 5

From 2 members

 VT100MKIII

• Power bandwidth: 15Hz to 80kHz
• Frequency response: 1Hz to 100 kHz
• Input sensitivity: 1.9V RMS
• Out put: 8 ohms, 4 ohms

MSRP:
$0.00 Product Rating:
  5 of 5

From 2 members

 VT50
45 WPC Vacuum Tube Power Amplifier

MSRP:
$2995.00 Product Rating:
  5 of 5

From 7 members