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Questions?
The Reference series was created to replace the Studio series, and the first Reference series amplifier lineup was completed in 2001. The new Reference series does not aim to offer an amplifier for everyone, but rather the best amplifier in its price range.
Zapco's Class AB amplifier design has been tested over decades, and only top-quality components are used to achieve the best sound quality.
Features
- 4-channel Class AB High-End amplifier
- Signal-to-noise ratio >104 dB
- High-quality bipolar input dual-OP
- High precision 0.1% output resistors
- Low internal resistance power capacitors
- Ultra-low on-resistance, fast switching Mosfets
- High-performance pure copper transformers
- Balanced RCA input (SymbiLink)
Technical specifications
- Power RMS @ 4 Ω: 4 × 150 W
- Power RMS @ 2 Ω: 4 × 230 W
- Power RMS @ 4 Ω bridged: 2 × 470 W
- Distortion (THD): <0.02%
- Signal-to-noise ratio: >102 dB
- Frequency response: 10 Hz – 40,000 Hz (±1 dB)
- Input sensitivity: 0.5 V – 8 V
- Fuses: 2 × 40 A
- Dimensions (W × D × H): 416 × 210 × 62 mm
Components
- Transformers: High-power chrome-plated toroidal transformer
- Output transistors: Sanken MN1526 and MP1526, 260 V / 15 A
- Capacitors: ELNA RA3 and RFS series in the signal path
OP upgrade
Reference amplifiers offer the possibility to replace the original OPs (MUSES8820) with even more powerful OPs (MUSES02). We recommend that the procedure be performed by qualified technicians.