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This is a reboot of our popular audiophile quality 128 steps balanced in/out volume control board.
The kit features :
1. high quality PCB with SMD components already soldered on the board ;
2. Dale non-magnetic resistors as the only resistors on the audio path ;
3. Can be retro-fitted with IR remote motorized potentiometer to become a remote stepped volume control board.
The existing values have an input and output impedance of 8K to 100ohm. This adheres to the volume control in Pass Aleph series preamplifier. Therefore it is more suitable for connecting to source that has a strong driving capability, or inserted after the preamplifier. Most of modern preamplifier can drive down to such low impedance. If yours is a tube preamplifier, it is preferable that it has a cathode follower at the output stage for better driver capability.
Input Impedance : Between 8K to 100 ohm
Supply voltage : AC 12V to 15V or DC +15V to +18V 250mA
We do air shipping worldwide at US$7.50.
| Item Specifics | |
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| Brand : | Unbranded/Generic |
| MPN : | Does not apply |
| UPC : | Does not apply |
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Electronics
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128 steps balanced in/out stereo volume control kit w/ highly reliable relays !!
This is a reboot of our popular audiophile quality 128 steps balanced in/out volume control board. The kit features : 1. high quality PCB with SMD components already soldered on the board ; 2. Dale non-magnetic resistors as the only resistors on the audio path ; 3. Can be retro-fitted with IR remote motorized potentiometer to become a remote stepped volume control board. The existing values have an input and output impedance of 8K to 100ohm. This adheres to the volume control in Pass Aleph series preamplifier. Therefore it is more suitable for connecting to source that has a strong driving capability, or inserted after the preamplifier. Most of modern preamplifier can drive down to such low impedance. If yours is a tube preamplifier, it is preferable that it has a cathode follower at the output stage for better driver capability. Input Impedance : Between 8K to 100 ohm Output Impedance : Between 8K to 100 ohm
(Note : This is a R2R type attenuator. Therefore the input and output impedance varies with position)
Board Dimension :
Supply voltage : AC 12V to 15V or DC +15V to +18V 250mA Each board come with a 50K potentiometer to control a DC level for specific relay setting. Audio signal does not pass through the 50K potentiometer. It is for control purpose only.
This is a kit that requires soldering. The SMD parts are already presoldered on the board.
The assembled board in the picture is for reference.
We provide schematic and part list to buyers.
We do air shipping worldwide at US$7.50.
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