XFAMPS01 - Enclosed Stereo Audio Amplifier
LM1875 Class-AB 36W
This is a flat Class-AB audio Amplifier. All modules are made using though-hole components only, that are soldered to 3mm traces of single-sided FR-4 PCB. XF-AMPS01 is powered by regulated dual ±DC power supply that is decoupled from main via transformer. This unit features large capacitors, large heat sinks, phoenix connectors and double insulated enclosure. Driven by 2 LM1875 USA-made ICs this amp is build to last.
Features
- Stereo Output
- Total Output Power: 36W RMS
- Low Distortion: 0.015%,1kHz,20W
- Wide Power Bandwidth: 70 kHz
- Volume Control
- LED Power Switch
- MDF Enclosure
- Stand-by AC Power Draw: 3-4W
Specifications
- LM1875 Class-AB IC
- Optimal Load: 4Ω-8Ω/channel
- Input Impedance: 47k Ohm
- Power Input: 120VAC 60Hz
- Operating Temperature: 0-70°C
- AC Power Input: 120V AC 60Hz via Polarized Cable IEC-60320
Dimensions & Weight
25cm x 16cm x 8cm9.8" x 6.3" x 3.1"
Weight 1.75kg / 3.88lb
Resources
XF-AMPS01 Amplifier Manual - PDF
XF-AMPS01_Amplifier_Manual.pdf (1.5mb)
XF-AMPS01 Thd and Freq Response
XF-AMPS01_thd_freq_response.pdf (241Kb)
Schemas, gerbers, models, masks and more:
XF-AMPS01 GitHub Repo

