Xindak PA‑1 Split Type Mono Power Amplifier
Pure Class‑A Monoblock | Extreme Current Capability | Absolute Channel Separation
The Xindak PA‑1 Split Type Mono Power Amplifier is a no‑compromise pure Class‑A monoblock, engineered for audiophiles who demand maximum musical purity, current delivery, and channel isolation. Each PA‑1 is a completely independent amplifier dedicated to a single channel, ensuring unrivalled stereo separation, stability, and control.
Designed around Xindak’s most advanced high‑current architecture, the PA‑1 Split Type delivers effortless drive, wide bandwidth, and exceptional tonal balance—even with demanding loudspeaker loads.
Key Engineering Highlights
Pure Class‑A Operation
- 80 W into 8 Ω in pure Class‑A
- Constant bias for maximum linearity
- No crossover distortion, even at low listening levels
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True Monoblock Construction
- One chassis per channel
- Complete electrical and mechanical separation
- Maximum channel separation and soundstage stability
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High‑Current Output Stage
- Six pairs of SANKEN 2SA1295 / 2SC3264 power transistors
- Peak output current capability up to 102 A
- Easily drives low‑impedance and current‑hungry loudspeakers
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Massive Power Supply
- Two 300 W toroidal transformers per monoblock
- 100,000 µF / 80 V total filtering capacitance
- Designed for extreme dynamic headroom and long‑term stability
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Advanced Circuit Design
- Fully symmetrical current negative feedback topology
- Three‑stage Darlington amplification structure
- Optimized for wide bandwidth, low distortion, and high resolution
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Connectivity
- Balanced XLR input
- Single‑ended RCA input
- High‑quality speaker terminals supporting bi‑wiring
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Technical Specifications
- Amplifier Type: Mono power amplifier (split type)
- Operating Class: Pure Class‑A
- Output Power: 80 W / 8 Ω
- Frequency Response: 10 Hz – 100 kHz (‑1 dB)
- THD: ≤ 0.02%
- Signal‑to‑Noise Ratio: 100 dB
- Input Sensitivity: 2 V
- Input Impedance: 33 kΩ
- Power Consumption: ≈ 300 W (per unit)
- Dimensions (W × D × H): 430 × 460 × 203 mm
- Net Weight: ≈ 35 kg per monoblock
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Sound Characteristics
The PA‑1 Split Type monoblocks are designed to deliver:
- Deep, authoritative bass with exceptional grip
- Open, spacious midrange with precise imaging
- Smooth, extended treble free from harshness
- Stable performance even under complex dynamic loads
Pure Class‑A operation ensures continuous musical flow, density, and realism.
Ideal System Matching
The Xindak PA‑1 Split Type Mono Power Amplifiers are ideal for:
- High‑end tube or solid‑state preamplifiers
- Demanding loudspeakers with low impedance curves
- Reference‑level two‑channel audio systems
Xindak PA‑1 Split Type Mono Power Amplifier
Pure Class‑A power. One channel per chassis. Zero compromise.
