EICO HF-87 Stereo Tube Amplifier

RESTORED AND WARRANTIED FOR 90 DAYS

Output Power: 70W(two 35W amps) continuous, 140W peak

IM Distortion(60 & 7000 Hz at 4:1): 1% at 70 W

Harmonic Distortion: Less than 1% from 20 to 20,000 Hz within 1db of 70W

Frequency Response: +/-0.5db 5Hz – 100kHz

Transient Response: Excellent square wave reproduction (3usec rise time); negligible ringing, rapid setting on 20kHz square wave

Inverse Feedback: 17db

Stability Margin: 17db

Damping Factor: Above 11, 20Hz to 20kHz

Sensitivity: 0.38V for 70W output

Channel Separation: 55db

Hum: better than 90db below rated output

Speaker Connections: 4, 8, 16, and 32 ohms

Controls: Level Ch. 1, Level Ch. 2, “Service Selector” switch, ON-OFF switch

Tubes: 1-ECC83/12AX7, 2-6N7GTB, 4-EL34, 2-silicon diode rectifiers protected by a surgistor

Power Source: 117V, 60c

Power Consumption: 215W; 5amp. fuse

Size(HWD): 6 x 15 x 11 Inch

Weight: 32 lbs