Cayin C5 Portable Amp + ECCI PR100 MKII IEMsearch

Cayin C5 Portable Amp + ECCI PR100 MKII IEM

Cayin C5 Portable Amp + ECCI PR100 MKII IEM

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Know What I’m Cayin?

Some portable headphone amplifiers don’t seem that portable when they spend so much time charging on your desktop. For longer play time and more powerful output, plug your mobile player into the Cayin C5 Portable Amp for long-lasting, customizable sound.

Note: This drop comes with a pair of ECCI PR100 MKII IEMs, with the option to deselect it at check-out.

Cayin C5 Portable Amp + ECCI PR100 MKII IEM

Audio Opulence

With natural audio that is compatible with almost any headphone, the C5 is both powerful and easy to use. Out of the box, the dedicated OPA134 op-amp and high performance LME49600 audio buffer deliver lush, highly musical output with fully detailed instrumentation, complete with a fully realized soundstage. If the range isn't quite to your liking, both the bass and the gain can be adjusted to your taste.

Cayin C5 Portable Amp + ECCI PR100 MKII IEM

Plays for Days

Surrounded by an aluminum shell that protects the interior circuit and shields against any interference, the C5 stays both stylish and completely secure. Thanks to a high performance lithium battery with 11.1 V capacity, you can charge up to full power in four hours and take your audio to go for up to 12 hours of uniterrupted play. If your phone starts dying before you're done, simply plug it into the Cayin C5 Portable Amp via the included Micro USB cable and charge back up your device.

Cayin C5 Portable Amp + ECCI PR100 MKII IEM

Free Buds

The ECCI PR100 MKII IEMs are neutral earbuds that maintain high quality sound throughout your diverse music library. Extending to about 30 Hz before dropping off, the bass is strong and linear, the mids smooth, and the treble bright and pleasant. Built with an extra-long sound tube, the PR100 is designed to be inserted deeply without pressing your ear into the housings, boosting noise isolation without sacrificing comfort.

Cayin C5 Portable Amp + ECCI PR100 MKII IEM


  • Cayin Audio
  • Dedicated OPA134 op-amp
  • High performance LME49600 audio buffer
  • ALPS volume potentiometer
  • Aluminum shell
  • Can be used to power other mobile devices
  • Rated output power: 800 mW + 800 mW (32 Ohm load)
  • SNR: ≥101dB (A-weighted)
  • Battery capacity: about 12 hours
  • Frequency response: 20 Hz – 100 kHz (+/- 1dB)
  • Sensitivity: ≤ 500 mV (gain H)
  • Total harmonic distortion: ≤0.02% (1kHz)
  • Lithium battery capacity: 1000 mAh / 11.1 V
  • 5 x 2 x 0.5 in (136 x 63 x 15 mm)
  • 6 oz (185 g)


  • Micro USB charging cable
  • 1/8 in (3.5 mm) to 1/8 in (3.5 mm) cable
  • 2 rubber bands
  • 4 rubber feet
  • Instructions
Cayin C5 Portable Amp + ECCI PR100 MKII IEM


All orders will be shipped by Massdrop.

Estimated ship date is Jan 6, 2015 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.