Accuphase AD-2900 Phono Equalizer Unit

AD-2900 is the dedicated phono equalizer unit. Analog records can be reproduced with high quality by installing AD-2900 in a rear-panel slot. The AD-2900 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. Contains equalizer units with boards using glass cloth fluorocarbon resin with totally separated left / right channels Ideal MC/MM independent input circuit to achieve high noise performance Differential-style equalizer for high-precision RIAA characteristics Two input terminals to connect up to two tone arms Functions that can be operated from the front panel Memory settings for each input terminal Robust aluminum case to shield against external noise MC Gain : 64 / 70 dB switching Input impedance : 10 / 30 / 100 / 200 / 300 ohms switching MM Gain : 34 / 40 dB switching Input impedance : 47 kilohms ratedDifferential amplifier circuit with ultra low noise bipolar-transistors for MC cartridges. Compatibility with other pre-amplifiers (C-2820/C-2420 etc) AD-2900 is It can also be used for C2850/C-2820/C-2810/C-2800/C-2450/C-2420/C-2410/C-2400/C-290V/C-290. Input Input Sensitivity Input Impedance MC 64/70dB 10/30/100/200/300Ω MM 34/40dB 47kΩ   Regardless of the preamplifier model, the gain is MC: 64/70 dB and MM: 34/40 dB. Please note that it is different from the display of the gain switching switch when mounted on the following models. C-2820, C-2810, C-2800,C-2420、C-2410、C-240 Load impedance that can be selected while the MC input varies depending on the model of the preamplifier. Model Gain C-2900 10/30/100/200/300Ω C-2850/C-2820/C-2450/C-2420 10/30/100/300Ω C-2810/C-2800/C-2410-C-2400/C-290V/C-290 10/30/100Ω