20, 30, 60, 100 CPS (Hz) shelf boost, 0 – 13.5 dB
20, 30, 60, 100 CPS shelf attenuate, 0 – 17.5 dB
3, 4, 5, 8, 10, 12, 16 KCS (kHz) peak boost, 0 – 18 dB
5, 10, 20 kcs shelf attenuate, 0 – 16 dB
Input Impedance: ~600 Ohms
Output Impedance: ~50 Ohms
Noise: 92 dB below +10 dBm
Distortion: ≤ 0.15% at +10 dBm into 600 Ohms
Amplifier: Flat, 20 CPS to 20 KCS, +/- 0.5 dB
Tubes: 1 ea 12AU7, 12AX7, 6X4
Units in box: 1