Audio Reserch Reference 80S LS 28SE Set

Audio Reserch Reference 80S LS 28SE Set
https://hifiplaza.co.kr

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Audio Reserch Reference 80S Poweramp
Power Output:
- 70 watts continuous from 20Hz to 20kHz
- 1kHz total harmonic distortion typically 1% at 140 watts, below 0.04% at 1 watt
- Note: Actual power output depends on line voltage and condition; high line distortion can affect maximum power but is not critical for listening

Power Bandwidth:
- (-3dB Points) 7Hz to 68kHz

Frequency Response:
- (-3dB points at 1 watt) 0.7Hz to 94kHz

Input Sensitivity:
- 1.4V RMS Balanced for rated output (25.5 dB gain into 8 ohms)
- RMS SE for rated output

Input Impedance:
- 300k ohms Balanced; 75k ohms Single-ended

Output Polarity:
- Non-inverting
- Balanced input pin 2+ (IEC-268)

Output Taps:
- 4, 8, 16 ohms

Output Regulation:
- Approximately 1.0dB 16 Ohm Load to Open Circuit (Damping factor approximately 8)

Overall Negative Feedback:
- 15dB

Slew Rate:
- 10 volts/microsecond

Rise Time:
- 4.0 microseconds

Power Requirements:
- 105-130VAC 60Hz (210-250VAC 50Hz)
- 420 watts at rated output, 280 watts in Triode mode, 221 watts at “idle”, 3.6 watts off
- Units for Japan: 100VAC 50/60Hz

Tubes Required:
- 2 matched pair KT150 (Power output V1-V4)
- 2 6H30 (Gain stage V5, V6)

Dimensions:
- Width: 18.5” (47 cm) chassis; 19.0” (48.26 cm) faceplate
- Height: 10.5” (26 cm)
- Depth: 18.5” (47 cm)
- With handles & connectors: 21” (53.3 cm)

Weight:
- 62 lbs. (28.2 kg) Net
- 73 lbs. (32.7 kg) Shipping

Audio Reserch LS 28SE Preamp
Frequency Response:
- +0-3dB, 0.4Hz to 200kHz at rated output (Balanced, 200k ohms load)

THD+Noise:
- Less than .007% at 2V RMS BAL output

Noise:
- Less than -100dBv at max volume (103)

Dynamic Range:
- 122dB (AES17)

Crosstalk:
- -105dB

Gain:
- Main output: 18.5dB balanced output (12.5dB SE output)
- Record output: 0dB (Processor input: 0dB balanced out)

Input Impedance:
- 100K ohms Balanced, 50K ohms SE
- 8 Inputs – 4 balanced, 4 single-ended

Output Impedance:
- 600 ohms Balanced, 300 ohms SE Main (2)
- 20K ohms minimum load and 2000pF maximum capacitance
- Outputs (3): 2 Main, 1 Record (XLR and RCA connectors)

Output Polarity: Non-inverting

Maximum Input:
- 16V RMS BAL, 8V RMS SE

Rated Outputs:
- 2V RMS (1V RMS SE) into 200K ohm balanced load (maximum balanced output capability is 17V RMS at less than 0.5% THD at 1kHz)

Controls:
- Rotary volume selector (103 steps) and rotary input selector
- Push buttons: Power, Menu, Enter, Mono, Invert, Mute

Power Supplies:
- Electronically regulated low and high voltage supplies
- Automatic 45 sec. warm-up/brown-out mute
- Line regulation better than .01%

Tube Compliment:
- (4) 6H30P dual triode

Power Requirements:
- 105-125VAC 60Hz (200-250VAC 50/60Hz) 130 watts maximum

Standby: 2W

Dimensions:
- Width: 19” (48 cm)
- Height: 6.5” (13.7 cm)
- Depth: 13.7” (34.8 cm)
- Handles extend 1.6” (4 cm) forward of the front panel

Weight:
- 16.0 lbs. (7.2 kg) Net
- 24 lbs. (10.9 kg) Shipping