Sell 6N2 Fu19 Class A Vacuum Tube Sound Amplifier Stereo Preamplifier HIFI Audio Preamp best price

Description: 1. Use Beijing 6n2 electronic tube to drive and Beijing fu19 vacuum tube in parallel with Class A amplifier circuit, and output transformer output 2. The core output transformer is made of Z11 0.35MM 66*19 silicon wafer with special process winding, and the power supply is made of H 14 3600.5 annealed silicon wafer 3. One line audio input, perfect earphone protection circuit, output transformer no-load protection 4. The original designer has a fever predecessor to provide a prototype circuit, and then a fever predecessor improves the circuit, installs the prototype, and after half a year of selection of components for sound tuning and improvement, the finalized production is on the market and sold in batches. The production is strictly in accordance with the component assembly during the tuning 5. The sound description is: 6n2+fu19 fever earphone two-use amplifier, a high-quality headphone amplifier with performance in the audio band, the overall low, medium and high frequency balance, with the characteristics of the electronic tube, full sense of low frequency and strength, mid frequency Warm and mellow, with special advantages in the high frequency. The whole high frequency is clearly layered, and there is no split at the very high frequency. The sound details, stretch and bright high frequency are well controlled! This comprehensive sound performance service can be praised as a cost-effective headphone amplifier Feature: The signal source may be a CD player and a computer audio source (the computer sound card must have a line output port) 1. Use all AC filaments to light up, and try listening with 102DB earphones. You can't hear a little bit of hum noise, and it feels as quiet as if it is not turned on 2. The fu19 parallel class A amplifier circuit driven by 6n2 is used to output 4w+4w. The power amplifier is required to be equipped with a two-way speaker with an impedance of (4- 8) ohms, a sensitivity of 6.5 inches above 90db, and headphones 19-600 ohms. (About 1w) 3. The volume potentiometer adopts Taiwan-funded A100k fully sealed potentiometer to ensure clear positioning and left-right balance 4.Using metal film resistors with accuracy up to 1% and imported electrolytic capacitors. 5. Use 0.8mm brushed stainless steel with wooden chassis structure Parameters: The output characteristics of this machine, the 4 ohm port is for direct output, and the 8 ohm output is switched with the headphone jack switch 1. The full name of the product: 6n2+fu19 power amplifier + amp dual-purpose machine, vacuum tube amplifier 2. Product color: stainless steel with brushed surface 3. Product weight: about 6kg with packaging size 40*35*25cm 4. Product size: size 19*18*16cm including height of tube Input: one RCA input · Output: rear power amplifier interface output impedance 4 ohms 8 ohms two sets of interfaces 4w+4w Front 6.35mm standard headphone output jack 19-600 ohm Frequency response: 26-38KHz ±2db Output signal noise