Use a part of the SRPP preamplifier circuit and the "long tail" type inverter circuit. Using a modified version of ultra-linear push-pull amplifier circuit, this amp puts out incredible sound and has more than enough 40 watt power each side. It uses four EL34B (export version update) and 12AT7. Very heavy at over 50lbs.
The adopts and imports the silicon steel sheet transformer audio frequency output (0.35mm) and high-quality enameled wire of high strength and the craft winds to do especially. Uses philip MKP audiophile capacitors and gold-plated high-precision resistors;the main channel using imported large-volume potentiometer with a quiet musical background, low noise level, no sound pollution and durable.
Beautiful heavy duty aluminum and steel chassis, panel and frames. Tube amp must connected with speakers before turning ON. Strictly prohibit send signals to amp without connected loads(speakers) or load short circuit when the switch is ON.
Too high or too low power supply voltage does irreversible harm to the amp, preferably less than 5% of the specified voltage. If your mains voltage exceeds this value, often best to use with the AC power supply. Temperature is higher when tube amps working, placing attention to ventilation, cooling. In the boot or just shut down for a period of time (within 30 minutes) Do not spill liquid on the tubes.
You should take about 100h time to operate the amp. Tube: EL34 × 4, 12AX7 × 2, 12AU7 × 2. Output power: 40W x 2 RMS 8 ohms. Output impedance: 4 - 8 ohms. THD: =0.9% (at 28W).Frequency response: 10Hz - 60KHz. S/N ratio: 85dB(A Weight). Power supply: 110/120V or 220/230V 60/50Hz. This item is in the category "Sound & Vision\Home Audio & HiFi Separates\Amplifiers & Pre-Amps". The seller is "aoshida-hifi-uk" and is located in this country: CN. This item can be shipped worldwide.