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Fosi ZP3 Preamp Review: 3 Things Nobody Talked About...

2.0K views· 63 likes· 6:12· Mar 19, 2026

🛍️ Products Mentioned (11)

Hi guys, here's my review of the Fosi Audio ZP3 balanced preamp. Check out the Fosi ZP3 here: Official Store: https://fosiaudioshop.com/products/zp3-preamplifier?sca_ref=7181416.6BliyHag3V&utm_source=affiliate&utm_medium=referral&utm_campaign=uppromote Amazon: https://amzn.to/4rHKBnR Aliexpress: https://s.click.aliexpress.com/e/_c3O5FapB AliExpress Coupon Codes for the ZP3! $15-3: 【IFPRR1AO $30-5: 【IFPGIUZ4】 $49-7: 【IFPAKAB8】 $99-17: 【IFPO4M8J】 $159-30: 【IFPZYINC】 $219-35: 【IFPVRCGF】 $329-50: 【IFPM7FO8】 $429-60: 【IFPI30YM】 $509-70: 【IFPNCKZO】 Code valid: Mar 16-25, 2026 (PST) #aliexpress #AliExpressFinds #AllonAE Want me to review something? Contact me. latenightunbox@gmail.com Timestamps 0:00 Introduction 0:49 1. Volume Knob 1:56 2. HPF Switches 2:52 3. Tone Controls & Sub 4:05 Sound Quality 5:21 Summary Affiliate Links to help support the channel: Amazon (US): https://amzn.to/4bPgVy5 AliExpress: https://s.click.aliexpress.com/e/_DFpBabt Akko Gear: https://en.akkogear.com/?ref=64356 Epomaker: https://epomaker.com?sca_ref=6630111.MzQ82UqHMJ Fosi Audio: https://fosiaudioshop.com?sca_ref=7181416.6BliyHag3V Monsgeek: https://www.monsgeek.com/?ref=LNUnboxing Linsoul: https://www.linsoul.com?sca_ref=8653875.83zsP4izW8 Luminkey: https://www.luminkey.com/?ref=yfbewqxc

About This Video

In this video I review the Fosi Audio ZP3 balanced preamp, but I’m not here to repeat the usual spec-sheet talking points. I tested it in my own setup and focused on three quirks I ran into that I don’t see many people mentioning, especially if you’re trying to use it as the “control center” for multiple sources and a subwoofer. First, I talk about the volume knob situation: the ZP3 uses a free-spinning knob, and Fosi has actually changed the newer batches to a plain knob with no marker (which makes way more sense). Second, I explain why the high-pass filter switches may seem “broken” at first—because they only work when tone controls are enabled, since the HPF is part of that circuit. Third, my biggest complaint: the tone controls don’t affect the dedicated subwoofer output, so your mains change while the sub stays the same. There’s a workaround (use line outs for the sub), but you lose the built-in high-pass filtering. Sound-wise, the ZP3 is clean and transparent in my chain with the V3 Monos and ZA3, and the volume memory per input is a genuinely useful feature—especially when switching between low-output sources like my phono preamp and normal sources without getting a surprise volume jump.

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