SMSL A2 Stereo Amplifiersearch

SMSL A2 Stereo Amplifier

SMSL A2 Stereo Amplifier

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Hi-Fi Digital Amplifier

Designed to power passive speakers that require an amplifier, the SMSL A2 delivers accurate sound reproduction in a compact, affordable package. It uses the TDA7492 core chip to deliver 40 watts per channel, and features two RCA inputs and one 3.5-millimeter headphone jack input—ideal for quickly sending a signal out from your phone or digital audio player. On the front panel, you’ll also find adjustable EQ bass and treble controls, and on the back, outputs for a pair of speakers and a subwoofer. The laser-engraved, silk-screened aluminum chassis is sleek and durable, and at 5.8 by 3.8 inches, it isn’t much bigger than your average smartphone.

Note: At checkout, choose between black and silver color options.

SMSL A2 Stereo Amplifier
SMSL A2 Stereo Amplifier
SMSL A2 Stereo Amplifier
SMSL A2 Stereo Amplifier

Color Options



  • SMSL
  • Aluminum enclosure
  • Output power: 40 W + 40 W (4 ohm)
  • Chip: TDA7492
  • THD + N: < 0.05%
  • Signal-to-noise ratio: > 90 dB
  • Crosstalk: < -90 dB (1 kHz)
  • Speaker impedance matches 3 – 16 ohm
  • Adjustable EQ bass and treble controls (front)
  • 360º rotating electronic volume control (front)
  • 2 x RCA inputs (back), 1 x 3.5 mm headphone jack input (front)
  • Outputs for a pair of speakers and a subwoofer (back)
  • Power supply: DC 19 V
  • Dimensions: 5.8 x 3.8 x 1.3 in (15 x 10 x 3 cm)
  • Weight: 2.2 lbs (1 kg)


  • User manual
  • Power adapter


All orders will be shipped by Massdrop.

Estimated ship date is Apr 4, 2017 PT.

After the drop ends, payment will be collected and the group’s order will be submitted to the vendor up front, making all sales final. Check the discussion page for updates on your order.