Zesto Audio BIA 120 power amp

Output

Pure Class A
60 Watts per channel
4, 8 and 16 Ohm output taps
8, 5 and 4 Amp Slow blow fuses for outputs
Eight 5 way binding post
Non inverting output polarity
Push-Pull and Ultra-Linear design

Inputs

RCA single ended inputs Left and Right with an impedance of 100K Ohms
Transformer floating XLR balanced inputs Left and Right (pin 2 hot)
with an impedance of 12K Ohms
Independent ground lift switches on left and right balanced inputs
2 Volts RMS input to reach rated output

Detailed Specs

Dual Mono
Auto bias
No negative feedback
Frequency response 20Hz to 50Khz ~ 2db
Total Harmonic Distortion ~ 0.22% at 1W output into 8 Ohms
Gain of 23dB
Noise level > 0.2 mV RMS into 8 Ohms with input shorted
1% metal film resisters throughout
Polypropylene capacitors throughout the audio path

Power

Custom Toroidal power transformer with global mains
Choke based power supply design
120 Volts AC mains
Optional factory installed 220V, 230V, 240V 50/60Hz
Power consumption at rated output 300 Watts
On/Off switch conveniently located on front panel
3 pin IEC power connector with fuse

Active Components

Matched quad set of four (4) KT88’s vacuum tubes
Four (4) Gold pin ECC82s (12AU7) vacuum tubes
High quality gold pin ceramic sockets

Other Features

Each unit is made by hand
50 hour factory burn in on all circuits and vacuum tubes
Dimensions 17″ W X 20″ D X 10 ” H
Weight 66 lbs. (30Kg)
16 and 14 gauge Zinc plated steel enclosure