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17 September 2026
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RDL AV INTERFACES - HD Series

28 items
RDL HD-PA35 POWER AMPLIFIER 35W, 4/8 Ohm, single channel, 1x dual RCA (phono)/terminal
RDL HD-PA35 POWER AMPLIFIER 35W, 4/8 Ohm, single channel, 1x dual RCA (phono)/terminalRDL HD-MA35 MIXER AMPLIFIER 35W, 4/8 Ohm, 3-channel, 2x dual RCA (phono), 1x terminalRDL HD-MA35U MIXER AMPLIFIER 35W, 4/8 Ohm, 4-channel, 2x dual RCA (phono), 2x terminalRDL HD-MA35UA MIXER AMPLIFIER 35W, 25/70/100V, 4-channel, 2x dual RCA (phono), 2x terminalRDL HD-RA35U REMOTE MIXER AMPLIFIER 35W, 4/8 Ohm, 4-channel, 2x dual RCA (phono), 2x terminalRDL HD-RA2 RACK ADAPTER 19-inch, for 2x HD series amplifiers, 2URDL HD-WM2 MOUNTING BRACKET Wall-mount, for 1x HD series amplifier without n model numberRDL RC-PS5 RACKMOUNT TRAY For 5x PS-24V3, 1U

RDL's HD Series offers a wide range of stand-alone designs housed in 2U, half-rack width metal enclosures. These amplifiers and mixers feature front-facing panel mounted controls and indicators with input and output connectivity positioned on the rear-facing panel. Up to two HD Series units can be mounted along side each other by using the optional range of accessory mounts.


HD-PA35 POWER AMPLIFIER, 35W

HD-PA35 is a single input audio amplifier for systems demanding high energy efficiency. It may be used as a single zone amplifier fed from a variety of RDL or OEM mixers. It has been designed to provide one or more additional zones to a mix originating from another RDL HD series mixer amplifier. The 35W power amplifier output is driven from a Class D amplifier stage. The amplifier output level may be VCA controlled using various optional RDL remote controls, or by industry standard 0 to 10 Vdc or 0 to 10kΩ controls. The output drives 4ohm or 8ohm loudspeakers. The output impedance is switch-selectable on the rear panel.

Dimensions (HxWxD): 88.9 x 216 x 171mm. Weight: 2kg


HD-PA35A POWER AMPLIFIER 35W

HD-PA35A has all the features of the HD-PA35 except the 35W amplifier provides a constant voltage output (25V/70V/100V) instead of a low impedance speaker output.


HD-PA35U POWER AMPLIFIER 35W

HD-PA35U has shares the functions of the HD-PA35 however in addition is features an automatic sleep mode, consuming less than 1W of mains power in standby mode.


HD-MA35A MIXER AMPLIFIER 35W

HD-MA35A is a three input audio mixer amplifier for systems demanding a broad range of features and high energy efficiency. Two output power amplifier zones are provided, 35W (Zone 1) and 2W (Zone 2). The Zone 1 output is driven from a Class D amplifier stage and has an output level that may be VCA controlled using various optional RDL remote controls, or by industry standard 0 to 10Vdc or 0 to 10kOhm controls. This output provides a constant voltage (25V/70V/100V). Zone 2 amplifier output drives an 8Ohm speaker and/or 600Ohm telephone equipment.

Dimensions (HxWxD): 88.9 x 216 x 171mm. Weight: 2.7kg


HD-RA35U REMOTE MIXER AMPLIFIER 35W

HD-RA35U is a four input audio mixer amplifier designed for systems demanding the broadest range of features and energy efficiency. Two output power amplifier zones, 35watts (Zone 1) and 4watts (Zone 2), are driven from Class D amplifier stages. The mixer and amplifier sections all normally shut down (standby 'sleep' mode) when audio is absent and automatically turn on when needed. A paging source is normally connected to Input 1. The Zone 1 amplifier output level for inputs 2, 3 and 4 is VCA controlled using various optional RDL remote controls. This allows the user controls to be conveniently wall mounted without running audio to and from the remote control location. The Zone 1 output drives 4ohm or 8ohm speakers. The output impedance is switch-selectable on the rear panel. Zone 2 amplifier output drives an 8ohm speaker and/or 600ohm telephone equipment.

Dimensions (HxWxD): 88.9 x 216 x 171mm. Weight: 2.5kg


HD-RA35UA REMOTE MIXER AMPLIFIER 35W

HD-RA35UA has all the features of the HD-RA35U except the Zone 1 amplifier provides a constant voltage output (25V/70V/100V) instead of a low impedance speaker output.

Description Price £
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RDL HD-PA35 POWER AMPLIFIER 35W, 4/8 Ohm, single channel, 1x dual RCA (phono)/terminal Stock code: 57-2614
Ordered on demand, available in 2‑3 weeks. Need it sooner? Call us
£358.80
RDL HD-PA35U POWER AMPLIFIER 35W, 4/8 Ohm, single channel, 1x dual RCA (phono), VCA remote Stock code: 57-2613
Ordered on demand, available in 2‑3 weeks. Need it sooner? Call us
£386.40
RDL HD-PA35A POWER AMPLIFIER 35W, 25/70/100V, single channel, 1x dual RCA (phono)/terminal Stock code: 57-2611
Ordered on demand, available in 2‑3 weeks. Need it sooner? Call us
£387.40
RDL HD-MA35A MIXER AMPLIFIER 35W, 25/70/100V, 3-channel, 2x dual RCA (phono), 1x terminal Stock code: 57-2606
Ordered on demand, available in 2‑3 weeks. Need it sooner? Call us
£474.60
RDL HD-RA35U REMOTE MIXER AMPLIFIER 35W, 4/8 Ohm, 4-channel, 2x dual RCA (phono), 2x terminal Stock code: 57-2617
Ordered on demand, cancellations may incur charges, available in 2‑3 weeks. Need it sooner? Call us
£564.00
RDL HD-RA35UA REMOTE MIXER AMPLIFIER 35W, 25/70/100V, 4-channel, 2x dual RCA (phono), 2x terminal Stock code: 57-2616
Ordered on demand, cancellations may incur charges, available in 2‑3 weeks. Need it sooner? Call us
£585.00
RDL HD-ASC1 SECURITY COVER Front, for 1x HD series amplifier Stock code: 57-2601
Ordered on demand, available in 2‑3 weeks. Need it sooner? Call us
£42.22
RDL HD-BP1 SECURITY COVER Rear, for 1x HD series amplifier Stock code: 57-2602
Ordered on demand, available in 2‑3 weeks. Need it sooner? Call us
£75.16
RDL HD-FP1 FILLER PANEL For 1x HD series amplifier Stock code: 57-2603
Ordered on demand, available in 2‑3 weeks. Need it sooner? Call us
£47.55
RDL HD-HRA1 RACK ADAPTER 10.4-inch, for 1x HD series amplifier, 1U Stock code: 57-2605
Ordered on demand, available in 2‑3 weeks. Need it sooner? Call us
£87.42
RDL HD-RA2 RACK ADAPTER 19-inch, for 2x HD series amplifiers, 2U Stock code: 57-2615
Ordered on demand, available in 2‑3 weeks. Need it sooner? Call us
£93.82
RDL HD-WM1 MOUNTING BRACKET Wall-mount, for 1x HD series amplifier with odel number Stock code: 57-2618
Ordered on demand, available in 2‑3 weeks. Need it sooner? Call us
£99.07
RDL HD-WM2 MOUNTING BRACKET Wall-mount, for 1x HD series amplifier without n model number Stock code: 57-2619
Ordered on demand, available in 2‑3 weeks. Need it sooner? Call us
£83.62
RDL PS-24V3 POWER SUPPLY 24 Vdc, 3A, no power cord Stock code: 57-401
Ordered on demand, available in 1‑2 weeks. Need it sooner? Call us
£129.70
RDL PS-24AX-UK POWER SUPPLY 24 Vdc, 500mA, UK plug Stock code: 57-402
5 in stock Need more?
£38.53
RDL PS-24AX-EU POWER SUPPLY 24 Vdc, 500mA, Euro plug Stock code: 57-404
Ordered on demand, available in 1‑2 weeks. Need it sooner? Call us
£38.53
RDL PS-24AS POWER SUPPLY 24 Vdc, 500mA, North American plug Stock code: 57-400
1 in stock Need more?
£38.53
RDL PS-24KX-UK POWER SUPPLY 24 Vdc, 1A, UK plug Stock code: 57-403
1 in stock Need more?
£49.82
RDL PS-24KX-EU POWER SUPPLY 24 Vdc, 1A, Euro plug Stock code: 57-405
Ordered on demand, available in 1‑2 weeks. Need it sooner? Call us
£49.82
RDL RC-PS5 RACKMOUNT TRAY For 5x PS-24V3, 1U Stock code: 57-408
Ordered on demand, available in 1‑2 weeks. Need it sooner? Call us
£105.00
RDL DRA-35P DIN RAIL ADAPTER For 1x PS-24V3 Stock code: 58-555
Ordered on demand, available in 1‑2 weeks. Need it sooner? Call us
£15.07

Discontinued products

RDL HD-PA35UA POWER AMPLIFIER 35W, 25/70/100V, single channel, 1x dual RCA (phono) input Stock code: 57-2612
No longer manufactured. Please contact Technical Support for alternatives.
RDL HD-MA35 MIXER AMPLIFIER 35W, 4/8 Ohm, 3-channel, 2x dual RCA (phono), 1x terminal Stock code: 57-2609
No longer manufactured. Please contact Technical Support for alternatives.
RDL HD-MA35U MIXER AMPLIFIER 35W, 4/8 Ohm, 4-channel, 2x dual RCA (phono), 2x terminal Stock code: 57-2608
No longer manufactured. Please contact Technical Support for alternatives.
RDL HD-MA35UA MIXER AMPLIFIER 35W, 25/70/100V, 4-channel, 2x dual RCA (phono), 2x terminal Stock code: 57-2607
No longer manufactured. Please contact Technical Support for alternatives.
RDL HD-FP2L FILLER PANEL With lens, for 1x HD series amplifier Stock code: 57-2604
No longer manufactured. Please contact Technical Support for alternatives.
RDL PLUG-AX-EU SPARE PART EU Plug for PS-24AX power supply Stock code: 57-406
No longer manufactured. Please contact Technical Support for alternatives.
RDL RC-HPS3 RACKMOUNT TRAY For 3 desktop PSUs, 10.4-inch rackmount, 1U Stock code: 57-409
No longer manufactured. Please contact Technical Support for alternatives.