30, 40, 70, 100 CPS shelf boost, 0 - 13.5 dB
30, 40, 70, 100 CPS shelf attenuate, 0 - 17.5 dB
1, 2, 3, 4, 5, 6, 8, 10, 12 KCS peak boost, 0 - 18 dB; 5, 10 KCS shelf boost, 0 - 12 dB
5, 10, 20 KCS shelf attenuate, 0 - 16 dB
Input Transformer: 600 Ohms
Output Transformer: 600 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
