KRELL KRC-2
¥ 850,000 (around 1994)
Commentary
High-bias pure class A line control amplifier with low-impedance configuration.
The line amplifier section employs a balanced method for all stages to ensure high S/N and to eliminate external influences.
The input stage uses FET to avoid the influence of source impedance variation on sound quality, and the output stage uses bipolar elements suitable for high current in order to realize a low-impedance configuration with high driving force for full complimentary service pure class A operation.
All signal paths are direct coupled, eliminating the colorization by capacitors, and the servo feedback circuit ensures stable operation with reliable DC offset.
A large-capacity toroidal transformer is used for the power supply.
In order to maintain signal purity, all stages are directly connected without wiring.
In addition, high-precision parts such as resistors of the US military standard (within ± 1% deviation) are used, and parts are arranged so that maximum efficiency can be obtained through sufficient examination and trial listening.
A high-quality gold-plated relay is used for the switching of the body, enabling high precision control.
An optical encoder is used for volume control, and 15 LEDs are arranged to display the 180 step control by resistance voltage dividing ratio.
Pure class A operation with high bias is adopted.
It comes with a wireless remote control, so you can operate the main body and turn the power amplifier ON/OFF.
This remote control has a solid aluminum machined finish.
Analog source can be used by connecting the separately sold phono equalizer KPE.
In the KPE, input sensitivity and impedance can be changed by the combination of the DIP switch on the internal board, and it is compatible with MC/MM cartridge.
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Model Rating
| Type | Line control amplifier |
| Input sensitivity (at 2 V rated output) | 530mV |
| Total harmonic distortion factor | 0.01% or less |
| S/N ratio (A) | 100 dB or more |
| Frequency characteristic | 2 Hz ~ 200 kHz + 0 -0.5 dB |
| Rated Output / Impedance | 2.0V/10 Ω |
| Maximum power output | 16V |
| External dimensions | Width 483x Height 70x Depth 384 mm |
| Weight | 5.9kg |
| Attachment | Wireless Remote Control |
| Phono Equalizer KPE (¥ 200,000) sold separately | |
| S/N ratio (A) | MC:80dB MM:95dB |
| Input impedance | Variable from 10 Ω to 47k Ω |
| Frequency response | 20 Hz to 20 kHz ± 0.1 dB |
| Gain | MC:64.5dB MM:36.5dB |
| Total harmonic distortion factor | MC : not more than 0.03% MM : not more than 0.01% |
| Input sensitivity | MC:1.2mV MM:30mV |
| External dimensions | Width 162x Height 64x Depth 213 mm |
| Weight | 2.8kg |