-20%10" Fosi Audio V3 Mono Amplifier Rack Mount - 1U
- Fosi Audio V3 Mono, the TPA3255 monoblock power amplifier
Fits the Fosi Audio V3 Mono in a 10" mini rack, 1U, with the power switch and the XLR/RCA selector out front and an open vented body so the Class D amp can shed heat. Monoblocks run in pairs, so a stereo setup takes two of these and 2U of the rack.
FITS
- Fosi Audio V3 Mono, the TPA3255 monoblock power amplifier
⚠️ Check the front panel reads V3 MONO before you order. The stereo Fosi V3 is a deeper chassis and has its own mount in my shop.
KEYSTONE OPTION
Choose one at checkout:
- No Keystones. Just the mount.
- +1 Keystone. One holder to the right of the amp, with an RJ45 keystone jack and an Ethernet cable included.
- +2 Keystones. One holder on each side of the amp, with two RJ45 keystone jacks and two Ethernet cables included.
The jacks and cables come with the keystone options, so you can bring a network drop out to the front of the rack without sourcing the parts separately.
WHAT YOU GET
- One 3D printed mount.
- The RJ45 keystone jacks and Ethernet cables that go with the option you pick.
- Rack screws are not included. Use whatever your rack takes.
MATERIAL
PETG, not PLA. A Class D amp under load runs warm, and PETG holds its shape where PLA would soften.
A 19" version of this mount is also listed in my shop. 💬 For any custom design requests please message me.
Fits
- Fosi Audio V3 Mono, the TPA3255 monoblock power amplifier
- Rack size
- 10"
- Rack units
- 1U
Reviews
Customer reviews
Reviews from our customers
Perfect part, fast shipping on time
Excellent customer service and everything exceeded our expectations!
Good quality 3D print. Exactly what I needed. Fits perfectly.
Great product. Perfect fit for my 10-inch rack.
This rack mount is outstanding. The print quality is solid and professional, with clean lines and no rough edges. My Firewalla Gold Plus fits perfectly and sits securely, giving the whole network setup a clean, organized look. The craftsmanship is top‑tier, and it feels built to last. Another great piece from this seller — highly recommended.
This rack mount looks great. The print quality is clean and solid, with no rough edges or weak points. The Hue Bridge Pro fits perfectly and locks in with a snug, confident hold. It gives the setup a professional, organized look and feels like it’ll last for years. Exactly what I was hoping for — highly recommended.

