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EL Amp II+


In Stock, Hurry, limited inventory!

EL Amp II+ can be built with Single-Ended RCA jacks (default), or with Balanced TRS Jacks.

RCA Jacks are the most common type of connection for desktop audio. If you are unsure, we recommend choosing the default. Gain is optimized for pairing with 2VRMS sources, such as the JDS Labs EL DAC II+.

Balanced TRS Jacks allow you to connect to any audio interface, DAC, or other source with Balanced TRS or XLR outputs. Gain is optimized for pairing with 4VRMS sources, such as the JDS Labs EL DAC II+ w/Balanced Output.

Standard Power: 1.3W per channel of clean power. This is more than you will need to drive the vast majority of headphones on the market, including dynamic sets by Sennheiser, AKG, Beyerdynamic, and Focal, as well as most planars from Audeze, HiFiMan, ZMF, etc.

Boosted Power: Your amplifier will be assembled with quad output buffers. Output power is boosted to over 2.3W per channel @ 32 ohms, satisfying even the most demanding sets at extreme volumes.

  • Covered by our 2-year transferable warranty

Simplified Audio, Re-engineered

We redesigned EL Amp to maximize your desktop audio experience. EL Amp II+ packs the performance you expect from JDS Labs into a precision machined aluminum chassis, with higher maximum power, and button activated preamp RCA outputs. Enjoy the comfortable knob and seamless transitions between your powered speakers and headphones! Now available with RCA or Balanced TRS Inputs.


Preamp Outputs

Output Selection

Plentiful Power

Dual Gain

Single-Ended or Balanced Input

Relay Muting


Amp Performance

  • Frequency Response 10Hz-20kHz +/- 0.02 dB 1.
  • SINAD @ 1kHz, 2VRMS (RCA) 119 dB
  • SINAD @ 1kHz, 4VRMS (TRS) > 114 dB
  • SINAD @ 1kHz, 50mV (RCA) 90 dB
  • IMD SMPTE -95 dB
  • Noise (20-20kHz) 1.99 μV
  • Crosstalk @ 10kHz -85 dB
  • SNR (20-20kHz) 122 dB
  • Dynamic Range (AES17) 120 dB
  • Output Impedance < 0.7 Ω
  • Channel Balance +/- 0.56 dB
  • Max Continuous Power, 600 Ω 160mW (9.8VRMS)
  • Max Continuous Power, 150 Ω 650 mW (9.8 VRMS)
  • Max Continuous Power, 32 Ω - Standard 1.3 W (6.53 VRMS)
  • Max Continuous Power, 32 Ω - Boosted 2.3W (8.68 VRMS)


  • Case Dimensions 5.8 x 5.8 x 1.6 in
  • Weight 17 oz


  • Headphone Output 6.35mm (1/4")
  • Analog Input RCA or Balanced TRS
  • Preamp-Output RCA


  • Dual Gain (RCA) 1.0x and 4.73x
  • Dual Gain (TRS) 1.0x and 2.43x
  • Volume Potentiometer Taper Alps 15A
  • 1. All measurements are taken from the RCA Input edition of EL Amp II+ unless otherwise noted.

Packaged Items

  • EL Amp II+
  • 16VAC Power Adapter

Instructions & Guides

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