Two 300B power tubes
Two 6SN7 drive tubes
Two 5U4G rectifier tubes
Voltage: AC 110/220V, 50/60 Hz
External dimension (each): 8½(H), 9"(W), 17"(D)
Weight: Amp Unit: 35 lbs, Power Supply Unit: 40 lbs

Headphone Amplifier Specifications:
Headphones impedance : 8-800 Ohms
Frequency response: 10 Hz—60 KHz, -2dB
Power output >= 1.5 watt
Signal/Noise: >= 95 dB
THD: <= 0.08%, 1Khz

Speaker Amplifier Specifications:
Power output: <= 10W x 2, THD <= 3%, 1Khz
Frequency response: 16—38 Khz, -2dB
Output impedance: 8 ohms
Signal/Noise: >= 90 dB

Standard Features:
Independent headphone and speaker circuits
High-end output transformer design
Point-to-Point wiring
Selectable speaker, AKG-K1000, high and low impedance dynamic headphones output switch
One 1/4" headphone jack and one XLR connector for K1000
Four pairs of gold-plate RCA inputs
Selectable inputs switch
Two pairs of gold-plate speaker terminals