CHUBAN TELOS T1000 pro Balanced Class A Tube Preamplifier with Remote Control – High-Fidelity Audio Amplifier

T1000 PRO Vacuum Tube PreAmplifier Full Balance Remote Control Class A HIFI Audio Tube PreAmplifier

Introduction:

This Preamp is a full-balanced vacuum tube Preamp for fever. The appearance is a bit similar to the Goldmund preamp. The internal circuit is the original design of our store. The class A of the sound is regulated in parallel, and the human voice is very thick, especially the female voice is very comfortable to listen to and does not want to turn off the power. The transformer is 2 Nippon Steel A-grade iron cores 60W*2 closed epoxy resin and shielding cover; the input and output coupling capacitors are precision paired Mondolfo oil-immersed capacitors, please refer to the picture below for more materials

parameter:

Frequency response: 5Hz-160KHz (+0/-2dB)

Input Impedance/Input Sensitivity: 47K/2V

Output Impedance Output Impedance: 80 ohms

Rated Output (20Hz-20kHz) Rated Output: 2V

Maximum output (20Hz-20kHz) Maximum Output: 15V (RCA); 24V (XLR)

Signal-to-Noise Ratio: 106dB(RCA); 105dB(XLR)

Total Harmonic Distortion (20Hz-20kHz): 0.01% (RCA); 0.015% (XLR)

Front stage size and weight: 430 wide * 110 high * 390MM deep; net weight about 8.5 kg

Power consumption: 20 watts static, 60 watts maximum

Amplification works: Class A

A balanced class A Preamp with excellent performance

of female vocal instruments, with a beautiful appearance.

The Preamp LCD screen is as shown above, the yellow font above is the fixed display LOGO,

and the white number in the middle is the volume scale display (the volume number is the

most customer parameter displayed by dividing the minimum sound to the maximum volume

from 0-200, the remote control volume is the motor linear, It's not that the volume of the remote

control changes to one bar by pressing the number. The customer should note that the digital

display is to collect the volume as a reference.)

The lower left corner shows OUT: it is the output (you can switch between different outputs

through the OUT button of the remote control), it can be single-ended RCA output, or

balanced XLR1 or XLR2 output, single-ended balanced can switch any group of outputs,

or switch simultaneous outputs .

The lower right corner shows IN: switch any group of four input channels as audio input

(four input CD, DAC, XLR1, XLR2 behind the front stage)

PreampEMI filter circuit, CLC can filter out the clutter interference of the power grid,

so that the AC power obtained by the transformer is purer and less interference.

In the power supply part of Preamp, the yellow relay is the function of high-voltage soft start of the tube Preamp. The characteristics of the tube determine that the filament is heated first and then the voltage is supplied, which can prolong the service life of the tube. The high-voltage part is connected to start rectification and filtering, and the high-voltage filtering is to steadily and slowly raise the voltage until it is stable. This time is about 10 seconds, which can further protect the electronic tube and prolong the life; the output relay is turned on in the last 10 seconds. The machine is set to turn on the output after about 50 seconds of warm-up time after the machine is turned on. The shutdown output is instantly disconnected, which can protect the rear stage. The switching sequence of the front and rear stages can also protect the rear stage without strict requirements.

Preamp four BB company OPA2604 dual op amps (produced in South Korea) are used for input and output RCA single-ended to balance, and the circuit is the high voltage working mode (+-20V) designed by the shop. Many op amps can't reach that high voltage , Solid customers can not replace by themselves, otherwise it is easy to burn the replaced op amp (actually it is not necessary, this is a specially designed circuit, with the optimal solution)

Potentiometer: Japan ALPS quadruple A100KX4

Mondolfo oil intrusion capacitors