• Incl.Excl.
  • Customer Support



      SMSL SP400 headphone amplifier

      € 483,43€ 584,95 3 In stock

      Buy now, pay later

      • 24h express shipping available
      • Same day shipping
      • In-house technical support
      • 45 days worry-free returns
      Request quotation
      Do you have a question about this product?

      Do you have a question about this product?

      Our employee is happy to help you find the right product

      Product description

      SMSL offers with its SP400 an excellent headphone amplifier, based on a solid internal design. It integrates a THX amplifier chip, known for its incredible performance, as well as balanced and unbalanced inputs and outputs.



      • Balanced & Single-Ended
      • High precision volume control
      • Custom power supply
      • Adjustable gain


      Product details

      SMSL SP400 Balanced MQA THX Headphone Amplifier


      Versatile, the SP400 has both balanced and unbalanced inputs and outputs. The SP400 is equipped with both balanced and unbalanced inputs and outputs, so both unbalanced RCA and balanced XLR inputs are available. On the output side, the SP400 offers an unbalanced 6.35mm jack headphone output, a balanced XLR 4-pin headphone output, and a balanced XLR Pre-Out output. The SP400's relay volume control allows for extremely precise adjustment of the sound level while ensuring low noise. The volume control has 256 levels. The power supply circuit of the SP400 is not to be outdone, SMSL integrates 2 custom-designed 24W high efficiency and low noise power supplies. These last ones allow providing to all the audio circuits a clean electrical signal, essential to ensure a high-quality sound reproduction. All of the SP400's components are integrated into a beautiful CNC machined aluminum housing. The design of the SP400 follows the design of the other devices in the range for visually consistent integration. The front of the device is also adorned with a beautiful OLED screen, displaying all the useful information and allowing intuitive navigation. In order to adapt to all types of helmets, the SP400 offers a 3-level gain control. Thus, it is possible to use either a high-sensitivity helmet or a high impedance model. 


      Package Includes:

      • 1x SMSL SP400
      • 1x Remote control
      • 1x Power cable

      Show more


      Article number
      SMSL SP400
      Rated power output
      <40 W
      Signal-to-noise ratio (SNR)
      133dB, A-Weighted
      -123dB, 0.00007% (1kHz, 32 ohm)
      -117dB, 0.00013% (20-20kHz, 32 ohm, -3dB)
      Frequency response
      0.1Hz - 500kHz(-3dB)
      Input impedance
      Circuit Topology
      THX AAA-888
      Input connection type
      Balanced x1, Unbalanced x1
      Power Requirements
      100-240VAC, 50-60 Hz
      Dimensions (L x W x H)
      220 x 215 x 43 mm (WxHxD)

      Show more


      0 from 5Based on 0 reviews
      Review this product

      There are no reviews written yet about this product..

      SP400 headphone amplifier
      € 483,43
      € 584,95
      SP400 headphone amplifier
      3 In stock
      Add to cart
      Compare 0

      Add another product (max. 5)

      Start comparison

      By using our website, you agree to the usage of cookies to help us make this website better. Hide this messageMore on cookies »