AD-2850 is the dedicated phono equalizer unit. Analog records can be reproduced with high quality by installing AD-2850 in a rear-panel slot. The AD-2850 features separate input circuitry for MC and MM cartridges to ensure optimum matching and realize outstanding S/N ratio. 2 sets of analog-player input jacks, the AD1 and AD2 are equipped, and their selections are switchable with the INPUT selector of pre-amplifiers.
MM/40dB, MC: 20～20,000Hz ±0.2dB
MM/30dB: 20～20,000Hz ±0.3dB
AD Maximum input voltage (1kHz, 0.005% THD)
MM/30dB INPUT: 310mV
MM/40dB INPUT: 96.5mV
MC/60dB INPUT: 9.5mV
MC/70dB INPUT: 3.2mV
Gain (Gain selector set to 18 dB position, 12/18/24 dB settings available):
AD[MM:30/40dB]INPUT → BALANCED/LINE OUTPUT: 48/58dB
AD[MM:30/40dB]INPUT → REC OUTPUT: 30/40dB
AD[MC:60/70dB]INPUT → BALANCED/LINE OUTPUT: 78/88dB
AD[MC:60/70dB]INPUT → REC OUTPUT: 60/70dB
Compatibility with other pre-amplifiers (C-2820/C-2420 etc)
The AD-2850 can be used in the models C-2820/C-2810/C-2800/C-2420/C-2410/C-2400/C-290V/C-290. However, the 300 ohm position for the MC impedance can be used only in the models C-2850/C-2820/C-2420, because other models have no corresponding selector position on the front panel. Also, the actual gain will be different from the indication of the AD gain selector knob as follows. MC: 60dB, 70dB, MM: 30dB, 40dB.