Accuphase C280L High End Dual Mono Balanced Preamplifier with Phono Stage MM/ MC

The Accuphase C-280 is a reference-class stereo control preamplifier developed during Accuphase’s high-end analog golden era. Designed with a fully discrete dual-mono architecture, it focused on ultra-low noise, signal purity, and precise control rather than coloration. The C-280 became respected for its exceptionally smooth volume attenuation, stable phono stage, and natural tonal balance. Its presentation is refined, spacious, and highly resolving without sounding analytical.

Detailed specifications:

Type:
Stereo control preamplifier

Frequency response:
DC – 200kHz (+0, -3dB)

Total harmonic distortion:
0.003%

Intermodulation distortion:
0.003%

Signal-to-noise ratio:
High level: 130dB
MC phono: 70dB
MM phono: 90dB

Gain:
High level: 18dB
MM: 36dB
MC: 62dB

Input sensitivity / impedance:
High level: 126mV / 20kΩ
MM: 2.5mV / 50kΩ
MC: 0.125mV / 100Ω

Maximum output voltage:
7V

Output impedance:
50Ω

Tone controls:
Bass: ±10dB at 20Hz
Treble: ±10dB at 20kHz

Phono stage:
Built-in MM and MC support
Fully discrete equalizer circuitry
Precision RIAA equalization

Construction highlights:
Dual-mono internal layout
Massive shielded power supply
Precision stepped attenuator
Copper-plated chassis sections
Separate regulated stages
Low-noise FET input circuitry
Heavy aluminum front panel
High-rigidity chassis construction

Connections:
Multiple line inputs
Dual phono inputs
Tape monitor loops
Pre-out connections
Balanced internal grounding design

Dimensions:
Approx. 475 × 171 × 392mm

Weight:
Approx. 18kg