FS: COS Engineering H1 DAC + headphone amp

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andrewinukm

  • Jr. Member
  • Posts: 15
FS: COS Engineering H1 DAC + headphone amp
« on: 7 Oct 2025, 10:43 am »
Price: SGD1500 or USD1200 (slight nego can be considered)
Item is in Singapore, will ship to anywhere.
Estimated shipping fees to USA:
Economy (up to 55days): SGD80++ (approx USD65);
Priority shipping (14 days): SGD160++ (approx USD130).
I will split shipping fee 50/50 with buyer.

Power switch is faulty - stuck at "on" position. But can power down to "standby mode" using volume knob or remote control.

Description:
A wonderful DAC+ headphone amp that I love dearly. Exceptionally built quality (1in thick face plate!!). Refined & sweet vocals with deep sound stage depth. A bit reluctant to sell it.

The magical sound of H1 comes from...
- COS’s proprietary algorithm & DSP
- 1-second buffer before converting to analog
- dedicated re-clocking circuitry with jitter precision ≤1ps
- low noise ladder volume control.

Selling to declutter. Original new price = USD 2500.

== Reviews ==
https://hifiknights.com/reviews/headphones/cos-engineering-h1/

https://www.headfonia.com/review-cos-engineering-h1-just-cause/

Blue Moon Award by 6moons: https://6moons.com/audioreviews2/cos2/1.html

https://review.u-audio.com.tw/reviewdetail.asp?reviewid=1226