Introduction

iBasso is a Chinese brand that is known for their digital audio players (DAPS). The iBasso DX150/DX200 allows the change of amp modules for different sound signatures. Recently, iBasso has released the AMP7 module that features phone out and line out. I would like to thank iBasso for providing this AMP7 module as a review unit. You can purchase the AMP7 module from iBasso or Penon Audio .

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Description (From Official Website)

  • AMP7 is a complete new discrete circuit design that based on our four channel architecture and features both a high voltage and current output. High current output is very useful for low impedance multi drivers in-ear monitors.
  • Low VCE transistors are utilized and are manually sorted and paired, providing better consistency and linearity. The low VCE also expands the linearity range.
  • +/-8V high voltage swing. This significantly improves dynamics and headroom, resulting in a more accurate sound that is true to the recording.
  • The transistors used on the buffer stage have a up to 2700mA output current rating, which allows the AMP7 to drive IEMs and headphones that require high current with ease.

Specifications

Phone Out:

  • Output Voltage: 3.2Vrms
  • Frequency Response: 10Hz-45KHz +/-0.3dB
  • S/N: 122dB
  • THD+N:
    • 0.00023%, -113dB (no load@1.8Vrms)
    • 0.00023%, -113dB (300Ω@1.8Vrms)
  • Output Impedance: 0.3ohm
  • DNR: 122dB
  • Crosstalk: -106dB

Line Out:

  • Output Voltage: 3.2Vrms
  • Frequency Response: 10Hz-45KHz +/-0.3dB
  • S/N: 117dB
  • THD+N: 0.00023%, -113dB (no load@1.8Vrms)
  • DNR: 117dB

Average Play Time: 7.5hours (Play time varies with different sample/bit rates, volume and headphone/IEM loads.)

Unboxing & Accessories

The AMP7 module comes in a simple black package with an opaque wrapper. On the wrapper are the names of the brand and model in black colour. At the back of the box, there is a sticker at the bottom right corner sporting the model name and serial number. Inside the package, there are screwdriver, instruction manual, warranty card and the AMP7 module. The screwdriver is used for removing the amp module to change to another one.

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Module Design & Build
The AMP7 module is similar to other modules but features 3.5mm phone out and line out.

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