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Audio Research REF300 Mk.I
SOLD $17,500.00
APR 2008
Natural Silver Faceplate
NEW TUBES!!!
300
Watts/Channel
Weight 60kg/each
Original ARC Boxes
Owners Manual
R.R.P. was $66,000.00
Specifications:
| Power output |
280 watts continuous at 16
ohms from 20Hz to 20kHz with less than 1% total harmonic
distortion (typically less than .05% at 1 watt). Typical power
under average circumstances will be around 290 watts. Maximum
power under ideal conditions will be around 300 watts. |
| Power bandwidth |
(-3dB points) 12Hz to
100kHz |
| Frequency response |
(-3dB points at 1 watt)
0.5Hz to 160 kHz |
| Input sensitivity |
1.75V RMS balanced for
rated output. (32dB gain into 16 ohms) |
| Input impedance |
200K ohms balanced |
| Output taps |
1, 2, 4, 8, 16 ohms |
| Output regulation |
Approximately 0.8dB 16 ohm
load to open circuit |
| Overall negative feedback |
10 dB |
| Damping factor |
11 |
| Hum & noise |
Less than 0.2mV RMS –110dB
below rated output (IHF weighted, input shorted, 16 ohm output) |
| Power supply energy
storage |
448 joules |
| Power requirements |
105–125VAC 60Hz
(210–250VAC 50Hz) 900 watts at rated output, 1200 watts maximum,
480 watts at idle, 280 watts standby |
| Tube complement |
REFERENCE 300: (4 matched
pairs) 6550C power output, (4) 6550C regulators, (1) 6922
regulator rmplifier, (4) 6922 driver, (4) 6922 input. |
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The REFERENCE 300 has
sufficient bias adjustment range to allow the use of any of the
following output tube types: 6550, 6550B, 6550C, KT88, KT90,
KT91, KT100. |
| Dimensions |
19" (48.3 cm) W x 10.5"
(26.7 cm) H x (23.5" (59.7 cm) D. Handles extend 1.5" (3.8 cm)
forward |
| Weight |
132 lbs. (59.9 kg) Net;
Shipped in pairs, 410 lbs. (186 kg) per pair |
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