Uploaded January 2026 | Updated September 2026, 2 weeks ago

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Cayin HA-6A Mk2 review
https://en.cayin.cn/features/7/59/718.html

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In this video, I take a deep dive into the Cayin HA-6A Mk2, a flagship tube headphone amplifier that promises to bridge the gap between delicate IEMs and power-hungry planar magnetic headphones. While many audiophiles love the "tubey" sound, most tube amps struggle with noise floors or lack of driving power. I explore how Cayin’s two-chassis design and custom transformers attempt to solve these issues.

I’ll walk you through the differences between Triode and Ultra-Linear modes, explain why the 4.4mm balanced output is a game-changer for sensitive gear, and compare its performance against the LAiV HP2A. Most importantly, I share my results from tube rolling, including a surprising discovery about how rectifier tubes—specifically the Ray Tubes 5U4—can transform the soundstage and clarity of this unit. Whether you use an Audeze LCD-5, ZMF Atrium, or high-end IEMs, this review covers everything you need to know about this $3,000 premium setup.

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00:00 Cayin HA-6A Mk2 review
01:16 Design & features
04:13 Sound quality
04:35 Ultra Linear vs Triode
08:59 Power output
13:31 Tubes and comparisons
26:43 Final thoughts

#audiophile #hifi #headphoneamp #cayin #tubesound #raytubes #headphoneaudio #highandaudio #zmfheadphones #audeze #hifiaudio #passionforsound #desktopaudio #tuberolling