Прочие устройства — ToneWinner AD-3240PA

The ToneWinner AD-3240PA is a three-channel power amplifier designed for home theatre systems, typically to power the three front speakers behind an AV processor. It uses a Class A/AB output stage with a Class H arrangement in the power supply.

Key specs that matter

ToneWinner specifies 250 W per channel into 8 ohm or 400 W into 4 ohm, measured at 1 kHz with THD of 1 percent. The nominal load is 8 ohm, and the amp is specified to work with speakers from 4 to 8 ohm. SNR is at least 100 dB and THD 0.006 percent or lower, both A-weighted. Gain is 29 dB plus or minus 1 dB, and the response runs from 10 Hz to 30 kHz (+1/-3 dB). The chassis measures 431 x 352 x 110 mm and weighs 11.7 kg net and 13.6 kg packed, in a carton of 544 x 474 x 210 mm.

Engineering and use context

A dual differential amplification circuit forms the input and driver section. Heat is managed by a cooling system that adjusts itself automatically according to operating temperature, which matters in a closed rack during long films. Five separate protection circuits protect both the electronics and the loudspeakers attached. Trigger inputs and outputs let the amp power up and shut down in step with a processor or other components. ToneWinner fits a patented dual-voltage power management system that accepts either 110-115 V or 220-230 V, which lets one version serve markets with either mains standard. The product is certified to the Chinese standards GB/T9254.1, GB4943.1 and GB17625.1 covering electromagnetic compatibility, safety and harmonic emissions. Its low height lets it fit a standard equipment rack alongside a processor of similar width, and the three-channel format makes it simple to add power in steps as a system grows. Several units can be combined when a larger layout with more surround and height speakers needs dedicated amplification for every channel, since each chassis contributes three more channels with identical ratings.

Pairing

The AD-3240PA is intended to follow a surround decoder such as the ToneWinner AT-600 or AT-200, taking the three front channels while another amplifier handles the surround and height channels. Its trigger link lets the whole chain start from the processor, and the low-impedance rating allows use with lower impedance front speakers.

Alternatives

The ToneWinner AD-8300PA offers eleven channels of amplification for larger home theatre speaker layouts.