Cayin U-9LS Stereo Vacuum Tube Preamplifier HIFI Audio Preamp XML Input
All items ONE-YEAR WARRANTY !!!
We can Declare the Value of the Order as Customer's Remark!!!
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 full-wave rectification circuit to provide a stable and powerful DC power supply for the amplifier. Its excellent rectification efficiency and low loss ensure the stability and purity of the power supply, providing a solid foundation for the pre-stage circuit.
Adopting a two-channel independent voltage-regulated power supply design, the Electro-Harmonix 6CA7EH vacuum tube provides a stable and pure voltage output, reducing the mutual influence of the two-channel power supply to ensure that each note is accurately presented, making the music clearer and purer
Provide NFB. negative feedback selection function to reduce the nonlinear distortion of the amplifier stage
NFB.LOW working mode:
Low loop negative feedback, open, unrestrained, good momentum, rich details
NFB.HIGH working mode:
High loop negative feedback, soft, pure and smooth sound, delicate lines
Cayin has more than 30 years of vacuum tube selection procedures, U-9LS prefers imported vacuum tubes, all vacuum tubes used are manually tested and paired, and strictly tested for performance. The machine must pass 48 hours of aging and pass the actual human ear audition before leaving the factory. The process is cumbersome and complicated to ensure the high standard of channel uniformity.
Cayin self-developed high-quality El-type power transformer, using imported Z11 silicon steel sheet, through exquisite manufacturing technology, the transformer is cleverly encapsulated in a resin-encapsulated shielding shell to prevent transformer vibration and leakage magnetic interference and influence on the circuit.
The welding of each electronic component in the host adopts the classic scaffolding process to ensure low loss of signal transmission. The wiring in the machine is rigorous and the process is complex. The audio transmission, power distribution, ground wire, etc. are truly completely independent and do not interfere with each other. From the design considerations of each detail, the process implementation guarantees the electrical performance indicators and product reliability of U-9LS
American AudioCapX PPFXS high-end coupling capacitor effectively isolates DC, improves the accuracy and stability of audio transmission, and improves the overall sound quality.
Thick layer silver-plated signal leads and silver-plated electronic wires have good conductivity to ensure the stability and reliability of signal transmission and reduce signal attenuation and noise interference.
The volume control uses the high-end customized potentiometer imported from Japan ALPS with good operating feel, low distortion and low noise, providing precise volume adjustment.
The standard infrared full-function remote control allows all functions to be realized through the remote control function, allowing you to enjoy music more freely.
The power-on mute delay is 60 seconds to protect the life of the machine and ensure sufficient preheating to produce good sound.
The operation instructions are clear at a glance, and the buttons and indicator lights are concentrated on the front panel. You only need to simply adjust to your favorite audio settings to listen to your favorite music.
Used with U-99i PLUS
Used with pure power stage U-120D
Specifications:
Maximum voltage output:
8V RMS (RCA)
16V RMS (XLR)
Gain: 17.5dB (NFB.LOW) / 16dB (NFB.HIGH)
Frequency response: 8Hz~100KHz(±3dB, RCA)8Hz~35KHz(+3dB, XLR)
Total harmonic distortion: 0.02% (2V RMS)
Signal-to-noise ratio: 100dB (A-weighted)
Input impedance: 47kΩ (RCA); 25kΩ (XLR)
Output impedance: 47kΩ (RCA); 25kΩ (XLR)
Channel isolation: 380Ω(RCA):700Q(XLR)
Input terminal: 90dB
Output terminal: XLR ;LINE1;LINE2;LINE3;LINE4XLR;RCA
Used vacuum tubes: ECC83SJx2, TUNG-SOL6SN7GTBx2, 6CA7EHx2, 17AX4GTx2
Dimensions: 430mmx445mmx239mm
Net weight: 20KG
Power consumption: 75W (maximum)
Working conditions: Temperature: 0℃~40℃ Humidity: 20%~80%
Storage conditions: Temperature: -20℃~70℃ Humidity: 20%~90%