SMSL SAP-9 Fully XLR Balanced Headphone Amplifier



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Product Details


XLR full-balanced input/output, Zero noise , clean sound

Can use 5V/2A power charger as power supply

Fully independent balanced circuit architecture

Separate TPA6120A2 as the amplifier circuit for each Left and right channels

Electronic volume control; Supports 2.5mm quadrupole balanced output



Input interface: RCA / XLR

Output interface: XLR four-core XLR interface / 6.35mm headphone jack / 2.5mm four-pole balanced headphone port

Unbalanced output amp power (measured at THD + N = 0.1%)

32 ohm: 175 mW

64ohm: 130mW

150 ohm: 78mW

300 ohm: 45 mW

Balanced Output Amp Power (measured at THD + N = 0.1%):

32ohm: 373mW

64ohm: 342mW

150 ohm: 245 mW

300 ohm: 155 mW

Power consumption: 7.2W

Main body weight: 443g

Accessories: 5V power adapter / USB to DC line

Note: The balanced output port and the unbalanced output port can not be used at the same time!

Questions & Answers

  • Q: I asked about the volume control being digital or analog, not the inputs. ie. Is it an infinite volume control, or does it have a defined ranged on the volume knob?
  • A: Hi Tony, volume control by sap-9.Thank you.
  • Tony 12/12/16 11:01 PM Asked.
  • Q: Does this have a digital or analog volume pot?
  • A: Hi Tony.This is a Headphone Amplifier, simulated with the balanced and unbalanced input.There is no digital.Thank you.
  • Tony 12/12/16 3:59 PM Asked.
  • Q: Does this require a Balanced DAC in order for Balanced to work?
  • A: Hi Jack,SAP - 9 is full balance design, the unbalanced input, will SAP - 9 internal single-ended into full balance to deal with.Thank you.
  • Jack Nickersun 12/9/16 5:49 PM Asked.
  • Q: What is the dimension of this W x D X H
  • A: Hi George Lin,SMSL SAP-9 dimension is 121mm*120mm*36mm.Thank you.
  • George Lin 11/26/16 2:05 PM Asked.