COVID-19 Update:

Due to the pandemic situation of COVID-19, the Hong Kong Post Office has stopped the conventional global shipping which causes a higher shipping cost. Therefore we made an adjustment on shipping price of our attenuator. In such, here we promise that once the Hong Kong Post Office service resumes, the attenuator price will be adjusted again. We sincerely apologize for any inconvenience caused to you.

About the Attenuator

    • This attenuator is formed by a series of resistors which functions as a voltage divider.
      The rotary switch moves along the chain as the volume dial is being turned to select the attenuator output.
      Its principle is similar as of a potentiometer. The input impedance of the attenuator remains constant, therefore, the signal source is constant with a non-varying loading.

    • This attenuator is formed by 2 resistors and 2 switch-contacts per step, results in a unique combination of resistors per step.
      Their function is to add up the impedance of the stepped attenuator, which forms a high quality voltage divider network.
      Each resistor set has an equal total series of resistance; therefore, the impedance of the signal source is always the same.

    • This attenuator consists of MN taper, with center detent.
      They function as blend-balanced L and R channels.
      The rotation of this attenuator controls the output voltage of L and R channels.
      Full output for L and R channels at 50% rotation.

    • This attenuator is formed by a fixed series of resistors and shunt resistors.
      Signal is fed through the fixed resistor and different shunt resistors, which is selected from 59 values ranging from zero to infinity.
      Despite the fact that shunt design will introduce varying values of input impedance, applying a single resistor and switch in a signal path could compromise any possible matching issues.

General Specification

Detent: Within loudness, 59 steps
Attenuation range: -60dB .. 0dB
Contact material: Hard gold
Resistance: 50KΩ/100KΩ
Mechanical life: > 10 000 cycles
Indexing angle: 6 degree
Resistance taper: 15A/MN
Material: CNC machined AL6063 aluminum
Feature: Double grounding design

*Specification may vary due to different model, please refer to datasheet for accurate info.

Choose your Attenuator

Product Image Part No. Type Channel Resistor Value Resistor Type (Tolerance) Resistance Taper Price(USD)
Part No. Type Channel Resistor Value Resistor Type (Tolerance) Resistance Taper Price(USD)
59 Steps Metallic Blue NMB Bearing Attenuator
SRS050KC15A Series Stereo 50K Carbon (5%) 15A $61
SRS050KM15A Metal (1%)
SRS100KC15A 100K Carbon (5%)
SRS100KM15A Metal (1%)
SRM050KC15A Series Mono 50K Carbon (5%) 15A $53
SRM050KM15A Metal (1%)
SRM100KC15A 100K Carbon (5%)
SRM100KM15A Metal (1%)
LDS050KM15A Ladder Stereo 50K Metal (1%) 15A $106
LDS100KM15A 100K
LDS250KM15A 250K
LDM050KM15A Ladder Mono 50K Metal (1%) 15A $68
LDM100KM15A 100K
LDM250KM15A 250K
SHS100KC15A Shunt Stereo 47K Carbon (5%) Refer to Resistance Taper $64
SHS047KC15A 100K 15A
SHM047KC15A Shunt Mono 47K Carbon (5%) Refer to Resistance Taper $55
SHM100KC15A 100K 15A
29L & 29R Steps + 1 Center Step, Metallic Blue NMB Bearing Balance Attenuator
BLS100KCMNT Balance Stereo 100K Carbon (5%) M N $68
BLS100KMMNT Metal (1%)

*If you have trouble viewing the table, please click here.

Datasheet & Order Link

Part No. Product Name Download Order Link
SRS050KC15A SRS050KC15A DBK Series type Stereo Attenuator
SRS050KM15A SRS050KM15A DBK Series type Stereo Attenuator
SRS100KC15A SRS100KC15A DBK Series type Stereo Attenuator
SRS100KM15A SRS100KM15A DBK Series type Stereo Attenuator
SRM050KC15A SRM050KC15A DBK Series type Mono Attenuator
SRM050KM15A SRM050KM15A DBK Series type Mono Attenuator
SRM100KC15A SRM100KC15A DBK Series type Mono Attenuator
SRM100KM15A SRM100KM15A DBK Series type Mono Attenuator
LDS050KM15A LDS050KM15A DBK Ladder type Stereo Attenuator
LDS100KM15A LDS100KM15A DBK Ladder type Stereo Attenuator
LDS250KM15A LDS250KM15A DBK Ladder type Stereo Attenuator
LDM050KM15A LDM050KM15A DBK Ladder type Mono Attenuator
LDM100KM15A LDM100KM15A DBK Ladder type Mono Attenuator
LDM250KM15A LDM250KM15A DBK Ladder type Mono Attenuator
SHS047KC15A SHS047KC15A DBK Shunt type Stereo Attenuator
SHS100KC15A SHS100KC15A DBK Shunt type Stereo Attenuator
SHM047KC15A SHM047KC15A DBK Shunt type Mono Attenuator
SHM100KC15A SHM100KC15A DBK Shunt type Mono Attenuator
BLS100KCMNT BLS100KCMNT DBK Balance type Stereo Attenuator
BLS100KMMNT BLS100KMMNT DBK Balance type Stereo Attenuator

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