Class A Audio Power Amplifier Hifi OTL Line RCA Input 30WX2 8Ohm 110/220V

This amplifier uses a pure Class A circuit with minimal distortion and the best sound quality, with an output power of 2×300000 at an 8-ohm load. It needs to be used in conjunction with a preamplifier to drive bookshelf or small floor standing speakers with excellent sound performance.

*Circuit characteristics

Adopting Class A single ended OTL circuit, single power supply and capacitor coupling output, the power transistor consists of two high current transistor modules, one amplifier and one active load, which is more reliable than the general parallel connection of multiple transistors

The sound is also cleaner and better. The circuit is simple, but the program is classic. The main function of Class A single ended power amplifier

The advantage is that compared to general push-pull class A and B and digital power amplifiers, the distortion is extremely small, thus improving the listening experience

The bass is deep and thick, the midrange is soft and warm, the treble is clear and sharp, and the sound level is distinct, with a strong sense of music

Feet. The carefully designed delay circuit starts up after startup, without producing noise that impacts the horn, ensuring safety and reliability

*Structure and materials used

This machine adopts a luxurious all aluminum alloy chassis, equipped with the thick heat sink necessary for a truly pure Class A amplifier. entrust

A 700 watt high-quality circular power transformer manufactured by a military factory, with ample capacity, reliability, durability, and minimal noise

. Two channels each use a set of power supply circuits, which do not interfere with each other. Four 15000 microfarads high-capacity filtering batteries

The capacitor is taken from the well-known American brand Mallory235 series, and the rectifier uses the original Motorola 50 bridge stack

Stable operation under Class A high current. The transistor module is made of a single piece of 8mm thick gold-plated copper plate, which is then dispersed with aluminum

The combination of heaters results in better thermal conductivity and greatly improves circuit reliability. All elements on the main display board

The components have been carefully selected, striving for excellence, and the soldering and wiring are also very meticulous.

Class A output power:

28W/8 ohm

50W/4 hm

Frequency response: 5Hz~80KHz ± 1dB

Harmonic distortion: â‰Â¤ 0.02%

Signal to noise ratio: â‰Â¥ 93dB

Sensitivity: â‰Â¥ 1V

Voltage gain: 23dB

Input interface: RCA input socket pair

Output interface: Two pairs of gold-plated horn connectors

Power consumption: 230W

Volume size: 320x200x320mm

Net weight: 17 kg