¥ 200,000 (Released in November 1993)
Phono equalizer unit developed exclusively for control amplifier C-290.
Record playback is possible by adding it from the rear panel of C-290.
Glass PRO base material adopted for C-290 is adopted, and external influence is suppressed by storing it in a sturdy aluminum case.
It uses a highly reliable DIN standard connector for connection to the body, and all functions can be switched on the C-290 panel.
The circuit consists of a push-pull type for all circuits and is equipped with a dedicated input circuit that matches each MM/MC cartridge. At MM input, it is matched to the high output impedance of the cartridge and is composed of FET elements with high S/N ratio. At MC input, minute signals are received with low impedance. Therefore, a differential input circuit is composed of low-noise elements, and the impedance of the NFB loop is reduced to achieve low-noise reproduction.
In order to match the characteristics of the cartridge, three types of MC input impedance can be selected : 10, 30 and 100 Ω.
The gain can be selected from 62 dB and 68 dB for MC and 30 dB and 36 dB for MM according to the output of the cartridge.
All of these switching can be done on the panel surface of the body of C-290.
|(when connected to C-290)|
|Type||Phono equalizer unit exclusively for C-290|
|Frequency characteristic||AD input (MM/36dB, MC) : 20 Hz to 20 kHz ± 0.2 dB
AD input (MM/30dB) : 20 Hz to 20 kHz ± 0.3 dB
|Total harmonic distortion factor||0.005%|
|Input Sensitivity / Impedance||
|S/N / input conversion noise||
|AD Maximum Input Voltage
(1 kHz, 0.005% distortion factor)
|Gain||AD MM (30/36dB) input → Balanced/Unbalanced output : 48/54dB
AD MM (30/36dB) input → Rec output : 30/36dB
AD MC (60/66dB) input → Balanced/Unbalanced output : 80/86dB
AD MC (60/66dB) input → Rec output : 62/68dB