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Tonewinner's AD-1PA is back in a "+" version with an optimized circuit. Powerful Class A stereo power amplifier, the Tonewinner AD-1PA+ benefits from a high quality balanced architecture that allows it to develop significant power while ensuring a dynamic and precise sound reproduction. Its careful and intelligent integration, proof of the attention paid by the brand to their product, results in a powerful and musical device, respecting the audio signal to reveal every detail.
The amplifier stage of the Tonewinner AD-1PA+ embeds 8 pairs of high power transistors TTC5200 and TTA1943 within a Class A. These allow the amplifier to deliver a consequent power of 300W RMS per channel under 8Ω.
The Tonewinner AD-1PA+ has three operating modes: Class A, Class AB or Auto. A switch allows you to select the most suitable mode according to your needs and your installation. The Auto mode automatically switches from Class A to Class AB when the temperature of the unit reaches a certain limit and switches back to Class A if the temperature drops.
With its dual speaker terminals, the Tonewinner AD-1PA+ offers the possibility of bi-wiring. This method of connecting to speakers can offer an improvement in sound quality by reducing the magnetic interactions of the cables.
In order to deliver such a power, the Tonewinner AD-1PA+ is equipped with a large power supply, including a high performance toroidal transformer of no less than 1200W. 16 large filter capacitors with a total capacity of 180,000µF ensure a clean and stable electrical signal. In addition, the left and right channels are independently power supplied.
The internal design of the AD-1PA+ has been thought to physically separate the different sections of the device and thus ensure a very good isolation. This design effectively limits interference and noise.
Technical characteristics
Specifications | |
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Product type | Power amplifier |
Channels | Stereo (2) |
Amplification type | Class A Class AB |
Inputs | 1* Single-ended stereo RCA 1* Balanced stereo XLR |
Outputs | Speaker terminals |
Trigger | Input and output |
Output power | 300W RMS/channel @ 8Ω, 20Hz-20kHz, THD < 0.1%, two driven channels 500W RMS/channel @ 4Ω, 20Hz-20kHz, THD < 0.1%, one driven channel 320W RMS/channel @ 8Ω, THD < 0.1%, one driven channel |
Pure class A output power | 100W @ 8Ω |
Impedance | 8Ω |
Channel separation | ≥ 80dB |
Bias selection | Class A Class AB Auto |
Speaker output mode | A B A+B |
Frequency response | 10Hz-100kHz (+1/-3dB) |
THD+N | < 0.008% @ 1kHz |
SNR | ≥ 108dB (A-weighted) |
Recommended minimum load impedance (per channel) | 2Ω |
Damping factor | > 200 @ 8Ω |
Input sensitivity | 1.6V @ rated power, 8Ω |
Gain | 29.5dB ±1dB |
General | |
---|---|
Supply voltage | 110-240V AC 50/60Hz |
Dimensions | 444*294*449 |
Net weight | 43.4kg |
Housing material | Aluminum |
Color | Black |
Package | 1* Tonewinner AD-1PA+ 1* Power cable |
Input | XLR |
Input | RCA |
Output | Speaker terminal |
Color | Black |
Channel | 2 (Stereo) |
Class | Class A / AB |
Amplifier chip | Transistors |
Power (W) | 300.0 |
Remote Control | No |