Posted: 8/21/2026 3:16:01 PM EDT
[Last Edit: AbsoluteLemur][Edited]
WTS: Monolith M2100X 90 watt stereo power amplifier, like new w/box, shipping included - price drop
[ Fixed Price]
*All offers still need to be accepted by the seller
Edited on 8/29/2026 6:55:28 PM EDT
 N/A
 ME
 US Only
 Digital Payment, MO
 FFL: No
 Condition: Pre-Owned
For sale is a lightly used Monolith M2100X 90 watt stereo power amplifier. This was used to power a pair of small studio monitors for just under two months, is in perfect condition with no blemishes or scratches, and works perfectly. Amplifier comes in original box and packaging.
This amplifier can be bridged to 200 watts mono, however I only ever used 8 ohm speakers in stereo configuration. Inputs are both RCA and XLR. While I didn't use the amplifier for high volume listening, the amplifier stays decently cool during normal use and I never heard the internal cooling fans kick on. Given the price point, I'm highly impressed with this amp, in particular with general soundstage capability and notably tight/accurate bass. I'm only selling this amplifier as I moved on to active studio monitors and no longer have a need for this.
Future Audiophile article about the M2100X: https://futureaudiophile.com/monolith-by-monoprice-m2100x-stereo-amplifier-reviewed/
Manufacturer website: https://www.monoprice.com/product?p_id=43863
Price: $250 shipped, payable via PayPal F&F (G&S add 3%), Venmo, Zelle, USPS money order or bank check. Will keep this amp if it doesn't sell at this price.
Shipping: UPS ground, insured, to CONUS. HI/AK extra. Other shipping methods available at cost.
Note: photos in this listing are stock photos from the manufacturer website (linked above). Amplifier is currently boxed up, but pictures are certainly available upon request.
Please let me know if you have any questions. Thanks for looking!
If you are interested in the item, use reply to ask any questions (or message the seller privately) or CLICK THE ILL TAKE IT BUTTON to make an offer!
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