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Relay R2R Passive Preamp Preamplifier

AED 800

Rob

4.8

11 items live

Item Details

Age

1-6 months

Warranty

Does not apply

Condition

Perfect inside and out

Usage

Used only a few times

Posted on: 18th April 2026

Description

Relay R2R Passive Preamp Preamplifier

Comes with remote control

Technical Information:

Balanced, RCA compatible relay volume control finished machine, passive front stage, 0-255 level volume adjustment, control accuracy and left and right balance are very good, can replace the traditional potentiometer. Using high visibility signal relay, signal loss is very small. The resistor used in the audio part is DALE smurf resistor, with high balance between left and right channels, small error and good sound recovery. The power supply of the control part of the machine does not participate in the audio processing. The signal is input from the input end of the machine, and is directly output to the output port after changing the volume through DALE resistance network, without damaging the sound quality.

1. The operation part of the machine adopts a 360-degree code switch, which feels very good. The left side of the machine is the input selection button, while the right side is the volume and function adjustment button. Right turn volume increases, left turn volume decreases.

2. With four-way input function, the machine has two ways of RCA input and two ways of XLR input, which can be selected by rotating or clicking the SELECT knob on the left side of the panel.

3, With digital tube display function, display color for orange, beautiful and generous. The number on the left is displayed as the input switching state, and the number on the right is displayed as the volume, which is very intuitive, and the display brightness can be adjusted at level 5.

4, With remote control function, can be remote control volume up, volume down, mute, power, display brightness and input switch. Click the remote control volume button to change the volume step by step. Press and hold the volume button of the remote control to adjust the volume continuously and quickly.

5. With the remote control learning function, you can learn the NEC coding remote control (generally the remote control for power amplifier and audio is NEC coding).

6, With boot memory function, boot will remember the last shutdown volume, input and other working state.

7. The output is equipped with the mute function of relay. When starting up, the audio output is opened after a delay.

8. The machine is equipped with a 16A omron relay control switch. When other circuits are installed in the machine, it is convenient to control the power supply of other circuit boards so as to facilitate the control and use.

9, With knob backlight light rendering function, and this function can be turned on or off according to your preference. the use of accurate software algorithm, all levels of switching is very smooth, no boom.

10. Machine size: the main body of the case is 320MM wide * 248MM deep * 70MM high. The measured size does not include the size of knob, RCA seat and machine foot.13. The case is made of aluminum alloy with solid materials and net weight of about 3kg.