RDL

RDL DS-SH1 Surface Mounted Stereo/Mono Headphone Amp

$0.99 - $79.00

The DS-SH1 is a wall or panel-mounted module that fits within a single-gang Decora-style enclosure. It provides a durable 1/4-inch (6.3 mm) headphone jack on the front panel and is available in various finishes like white, black, or stainless steel to match the decor.A key engineering feature is the use of a VCA (Voltage Controlled Amplifier) for the front-panel level control. This design choice ensures that audio signals do not pass through the potentiometer itself, which eliminates noise and crackle associated with standard volume knobs over years of use.

View Product Features

Inputs: Features two 10 kΩ balanced or unbalanced bridging inputs, accepting professional audio levels between -20 dBV and +20 dBu.
Input Sensitivity: Two internal recessed slide switches allow the installer to set the input sensitivity to either a low (+4 dBu nominal) or high (-15 dBV nominal) range prior to mounting.
Mono/Stereo Operation: A second internal switch selects between stereo and mono operation. In mono mode, the left input drives both headphone channels.
Output Power: The built-in amplifiers deliver more than 50 mW into either high or low impedance headphones.
Front Panel Control: A single, long-life potentiometer controls the output volume using a VCA circuit for noise-free adjustment.
Power Requirement: The module operates from a ground-referenced 24 Vdc power supply, drawing approximately 50 mA.
Frequency Response: Provides a frequency response of 30 Hz to 20 kHz (± 2 dB).
Mounting: Designed for convenient mounting in standard precut openings in metal or wood enclosures, or in various RDL mounting accessories.

In stock

13 in stock

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In-Stock Inventory

Used
C1932-44

RDL D-SH1 Stereo Headphone Amplifier in Original Box

Cosmetic Rating

Good

Items in "Good Condition" are well-maintained and show typical signs of regular use, such as light scratches, minor dents, or slight discoloration from tag removal. All essential parts are intact, and the equipment remains in great working order. Ideal for budget-conscious buyers seeking reliable, high-quality gear.

$0.99

View Product
Used
C1932-45

RDL D-SH1 Stereo Headphone Amplifier in Original Box

Cosmetic Rating

Good

Items in "Good Condition" are well-maintained and show typical signs of regular use, such as light scratches, minor dents, or slight discoloration from tag removal. All essential parts are intact, and the equipment remains in great working order. Ideal for budget-conscious buyers seeking reliable, high-quality gear.

$0.99

View Product
Used
C1932-46

RDL D-SH1 Stereo Headphone Amplifier in Original Box

Cosmetic Rating

Good

Items in "Good Condition" are well-maintained and show typical signs of regular use, such as light scratches, minor dents, or slight discoloration from tag removal. All essential parts are intact, and the equipment remains in great working order. Ideal for budget-conscious buyers seeking reliable, high-quality gear.

$0.99

View Product
Used
C1932-7

RDL D-SH1 Stereo Headphone Amplifier in Original Box

Cosmetic Rating

Good

Items in "Good Condition" are well-maintained and show typical signs of regular use, such as light scratches, minor dents, or slight discoloration from tag removal. All essential parts are intact, and the equipment remains in great working order. Ideal for budget-conscious buyers seeking reliable, high-quality gear.

$0.99

View Product
Used
C1932-43

RDL D-SH1 Stereo Headphone Amplifier in Original Box

Cosmetic Rating

Good

Items in "Good Condition" are well-maintained and show typical signs of regular use, such as light scratches, minor dents, or slight discoloration from tag removal. All essential parts are intact, and the equipment remains in great working order. Ideal for budget-conscious buyers seeking reliable, high-quality gear.

$0.99

View Product
Used
C1932-39

RDL D-SH1 Stereo Headphone Amplifier in Original Box

Cosmetic Rating

Good

Items in "Good Condition" are well-maintained and show typical signs of regular use, such as light scratches, minor dents, or slight discoloration from tag removal. All essential parts are intact, and the equipment remains in great working order. Ideal for budget-conscious buyers seeking reliable, high-quality gear.

$0.99

View Product
Used
C1932-42

RDL D-SH1 Stereo Headphone Amplifier in Original Box

Cosmetic Rating

Good

Items in "Good Condition" are well-maintained and show typical signs of regular use, such as light scratches, minor dents, or slight discoloration from tag removal. All essential parts are intact, and the equipment remains in great working order. Ideal for budget-conscious buyers seeking reliable, high-quality gear.

$0.99

View Product
Used
C1932-41

RDL D-SH1 Stereo Headphone Amplifier in Original Box

Cosmetic Rating

Good

Items in "Good Condition" are well-maintained and show typical signs of regular use, such as light scratches, minor dents, or slight discoloration from tag removal. All essential parts are intact, and the equipment remains in great working order. Ideal for budget-conscious buyers seeking reliable, high-quality gear.

$0.99

View Product
Used
C1932-37

RDL D-SH1 Stereo Headphone Amplifier in Original Box

Cosmetic Rating

Good

Items in "Good Condition" are well-maintained and show typical signs of regular use, such as light scratches, minor dents, or slight discoloration from tag removal. All essential parts are intact, and the equipment remains in great working order. Ideal for budget-conscious buyers seeking reliable, high-quality gear.

$0.99

View Product
Used
C1932-47

RDL D-SH1 Stereo Headphone Amplifier in Original Box

Cosmetic Rating

Good

Items in "Good Condition" are well-maintained and show typical signs of regular use, such as light scratches, minor dents, or slight discoloration from tag removal. All essential parts are intact, and the equipment remains in great working order. Ideal for budget-conscious buyers seeking reliable, high-quality gear.

$0.99

View Product
Used
C1932-36

RDL D-SH1 Stereo Headphone Amplifier in Original Box

Cosmetic Rating

Good

Items in "Good Condition" are well-maintained and show typical signs of regular use, such as light scratches, minor dents, or slight discoloration from tag removal. All essential parts are intact, and the equipment remains in great working order. Ideal for budget-conscious buyers seeking reliable, high-quality gear.

$0.99

View Product
Used
C1932-38

RDL D-SH1 Stereo Headphone Amplifier in Original Box

Cosmetic Rating

Good

Items in "Good Condition" are well-maintained and show typical signs of regular use, such as light scratches, minor dents, or slight discoloration from tag removal. All essential parts are intact, and the equipment remains in great working order. Ideal for budget-conscious buyers seeking reliable, high-quality gear.

$0.99

View Product
Used
C1932-40

RDL D-SH1 Stereo Headphone Amplifier in Original Box

Cosmetic Rating

Good

Items in "Good Condition" are well-maintained and show typical signs of regular use, such as light scratches, minor dents, or slight discoloration from tag removal. All essential parts are intact, and the equipment remains in great working order. Ideal for budget-conscious buyers seeking reliable, high-quality gear.

$0.99

View Product

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About the RDL DS-SH1 Surface Mounted Stereo/Mono Headphone Amp

The RDL DS-SH1 is a compact, surface-mounted headphone amplifier designed to provide multiple listeners with a high-quality, isolated audio feed in professional audio environments. This unit is commonly installed in recording studio control rooms, broadcast facilities, language interpretation booths, and sound reinforcement applications where several people need to monitor the same audio source simultaneously. It accepts a balanced line-level stereo input and distributes it to up to four headphone outputs via standard 1/4-inch phone jacks. Each output has its own dedicated volume control, allowing individual listeners to adjust their listening level without affecting others. The amplifier is built with high-fidelity circuitry to ensure transparent audio reproduction with low noise and distortion, preserving the integrity of the source material.

A key feature of the DS-SH1 is its flexible input configuration. It can operate in stereo mode, delivering the left and right channels to the headphones, or be switched to mono mode, where a single input channel is summed and sent to both ears. This mono capability is particularly useful for speech monitoring or in applications where the source is monaural. The unit is powered by an external low-voltage DC adapter, and its compact, rugged metal enclosure is designed for permanent mounting on a wall, equipment rack panel, or desktop. The surface-mount design with screw terminals for audio input and power facilitates clean, professional installations.

Installation is straightforward: the balanced audio source is connected to the screw terminal block, power is applied, and headphones are plugged into the front panel jacks. The DS-SH1 exemplifies RDL's focus on reliable, no-nonsense professional audio components. It provides a simple, effective solution for creating a dedicated, multi-user headphone monitoring station, ensuring that each listener receives a clear, adjustable, and isolated audio feed in critical listening environments.

Key Features

Inputs: Features two 10 kΩ balanced or unbalanced bridging inputs, accepting professional audio levels between -20 dBV and +20 dBu.
Input Sensitivity: Two internal recessed slide switches allow the installer to set the input sensitivity to either a low (+4 dBu nominal) or high (-15 dBV nominal) range prior to mounting.
Mono/Stereo Operation: A second internal switch selects between stereo and mono operation. In mono mode, the left input drives both headphone channels.
Output Power: The built-in amplifiers deliver more than 50 mW into either high or low impedance headphones.
Front Panel Control: A single, long-life potentiometer controls the output volume using a VCA circuit for noise-free adjustment.
Power Requirement: The module operates from a ground-referenced 24 Vdc power supply, drawing approximately 50 mA.
Frequency Response: Provides a frequency response of 30 Hz to 20 kHz (± 2 dB).
Mounting: Designed for convenient mounting in standard precut openings in metal or wood enclosures, or in various RDL mounting accessories.