Uploaded June 2026 | Updated September 2026, 2 weeks ago

---

Thanks to SJY & Apos Audio for the loan of Zeph!

Full review: youtu.be/mKJ_BcB8IG4

Buy from Apos Audio (affiliate link): https://apos.audio/products/sjy-zeph-open-back-planar-magnetic-headphones?sca_ref=1448954.julYPU81dF

My Horizon Closed Carbon review: youtu.be/8UOM3K_VLDc

Want to support the channel? Consider becoming a member! Or you can join my Patreon here:

patreon.com/wavetheory1

Or make a 1-time donation through PayPal here:

paypal.com/donate/?hosted_button_id=7N7Z8WRLWQ36E

Follow me on…

Bluesky: https://bsky.app/profile/wavetheorysound.bsky.social
Instagram: instagram.com/wavetheorysound