TONE WINNER AD-1PA+
Power amplifier
Code: 06585285
All our products are covered by Italian warranty.
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Model available exclusively in the "Silver" finish.
Tonewinner High-End Pure Hi-Fi Amplifier – High-Power Amplifier
The AD-1PA+ is a Hi-Fi stereo amplifier with Class A/AB modes, a high-power transformer, transistors, and capacitors. It is a flagship amplifier that pairs perfectly with the AD-1PRE+ processor. As one of the top 10 audio brands in China, Tonewinner has over 30 years of experience in designing and manufacturing acoustic products. As an original supplier, Tonewinner warmly welcomes distributors, partners, and customers worldwide.
Key features:
- Class A circuit design featuring full balance, full symmetry, and differential input for differential BTL power output.
- Independent power supply for both left and right channels, ensuring maximum channel separation.
- Output power of 300W/8Ω per channel. Equipped with a high-quality 1,200W toroidal transformer and a special audio-grade capacitor with up to 180,000µF capacity. Utilizes high-power transistors for parallel output, delivering a 60A current output.
- High-end aluminum chassis with a strict internal layout and strong anti-interference capability.
- Special gold-plated IC socket designed for high-end audio applications, allowing operational amplifier replacement.
- Features Tonewinner's patented technology: intelligent power supply switching management for high/low voltage operation. This ensures Class A Hi-Fi output power requirements while supporting energy efficiency and environmental protection (Patent No.: ZL201420783891.8).
- Multi-circuit protection: short circuit, overheating, and DC protection.
- Automatic power supply switching from ~110-115V to ~220-230V (Patent No.: ZL.201420543195.X).
- Functions
- Balanced and unbalanced inputs.
- Manual/trigger/standby functions.
- Static bias amplifier selection: Class A/Class AB/AUTO.
- Speaker output modes: A/B/A+B.
- Front panel indicators for functions: Standby/ON/Protection.
- Automatic power switching ~110-115V/~220-230V.
Technical specifications:
- Class A amplifier circuit design with fully balanced, symmetrical architecture and differential input for BTL (bridge) power output.
- Automatic switching between high and low power supply voltages.
- Automatic power supply voltage switching between ~110V and ~220V.
- 1,200W toroidal transformer and up to 180,000µF capacitors.
- Advanced amplifier protection circuits (short circuit, overheating, and DC protection).
- Automatic or manual switching between Class A and Class AB.
- Class A, Class B, and Class AB amplifier operating modes.
- Mechanical chassis design with independent and shielded compartments for power supply and amplifier modules to minimize interference and maintain low distortion.
- Signal-to-noise ratio: 108dB (A-weighted, balanced input), 115dB (A-weighted, unbalanced input).
- Total harmonic distortion (THD): 0.008% (1kHz).
- Frequency response: 10Hz-100kHz (+1/-3dB).
- Gain: 29.5dB ±1dB.
- Power output: 2x300W per channel at 8Ω.
- Impedance: 8Ω.
- Net weight: 42kg.
- Dimensions: 444 x 294 x 449 mm.
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