Amplificatore audiofilo dalla Cina

Features of this machine 1. The power transformer made of Z11 iron core with high-end special technology and special materials. 2. The front-stage main circuit uses two 12AX7 vacuum tubes and four 6KE8 vacuum tubes. 3. The phono circuit uses two 6KE8 vacuum tubes plus RIAA circuit to realize MC/MM function 4. The high-voltage power supply uses a 17BE3 vacuum tube as tube rectification and a 12DT5 vacuum tube as a tube voltage stabilization circuit 5. Fixed high and low frequency point boost...

OldChen 300B HIFI Single-ended Class A Tube Amplifier Upgrade Version 274B and CVS181-SE 100% original factory and brand new Parameters: Pre-amp tubes: 2 x PSVANE CV181-SE Rectifier tube: 1 x PSVANE 274B Power tubes: 2 x PSVANE made "special customize for Laochen 300B-SE" power tube  Output power : 9Wx2,   Power transformer Power: 150W Frequency response: 20Hz-25KHz Output Impedance: 4 ohm, 8 ohm Total Harmonic Distortion: ≤ 1% (1kHz) Input Impedance: 100K ohm Input...

Feature: Linear amplification, pure sound quality Using high-gain, high-linearity JJECC83S and TUNG-SOL 6SN7GTB vacuum tubes for linear amplification, reducing the noise and distortion level of the entire audio system, ensuring that the signal maintains clarity and dynamic range during amplification, so that U-9LS can accurately transmit input signals and present excellent sound quality Efficient rectification and voltage stabilization system RCA 17AX4GT rectifier tubes form an efficient...

Product parameters: Rated output power: STD unbalanced output: 400mW+400mW(L); 600mW+600mW(M): 700mW+700mW(H) 4.4BAL balanced output: 230mW+230mW(L); 350mW+350mW(M); 400mW+400mW(H) 4PIN BAL balanced output: 600mW+600mW(L): 750mW+750mW(M): 850mW+850mw(H) Frequency response: 18Hz~30kHz±3dB Total harmonic distortion: 0.2% (1kHz, 200mW; rated output power less than 5%) Sensitivity: 300mV~480mV Signal-to-noise ratio: 100dB (A-weighted) Headphone impedance matching: L: 8~64Ω; M:...

Feature: 4-channel differential circuit design Fully-Balanced DiscretePure Class A Headphone Amplification Balanced and Single-ended Dual Inputs Seamlessly connect with CD players, desktop decoders,portable players, and other audio sources with Line-leveloutput using XLR or RCA connectors. Pre-Amp Input | Line Level Input Serve as an integrated headphone amplifier when selecting LlNE input When connected to a front-end with preamplifier functionalityserves as a pure power amplifier when...