The Monoprice M650 ranks #403 out of 429 total Over-Ear Headphones for sound quality. See all Headphones rankings for every top pick.
Brand: Monoprice
Prices on this page were last checked October 13, 2026 at 3:17 PM UTC. Product prices and availability are accurate as of that date/time and are subject to change; the price and availability shown on Amazon at the time of purchase will apply to the purchase of this product.
As an eBay Partner, we may be compensated if you make a purchase.
#403 Monoprice M650 Discontinued eBay
Pros: Bass is lifted about 3.6 dB with extension to 20 Hz, giving kick drums and bass lines extra weight. Lower mids sit within about 0.5 dB of target, keeping voices and guitars natural. It uses 1 x 50mm dynamic.
Cons: Discontinued, so it is mainly found used. Presence sits about 5.7 dB low with a 9.8 dB dip near 4.1 kHz, so vocals and instruments lose some bite. A Harman score of 30 places it in the lower part of the over-ear rankings.
| Back | Open |
|---|---|
| Connection | Wired |
| Deviation From Target | 4.35 dB standard deviation |
| Driver Type | Dynamic |
| Drivers | 1 x 50mm dynamic |
| Form Factor | Over-ear |
| Frequency Response | 15Hz - 20kHz |
| Harman Preference Score | 30 (measured by oratory1990, via AutoEQ) |
| Impedance | 64 ohms |
| Sub-bass Extension | Within 6 dB of target down to 20 Hz (-0.5 dB at 30 Hz) |
| Tonal Tilt | -1.93 (negative is warmer, positive brighter) |
EQ preset to match the Harman target
Set a preamp of -6.7 dB, then add these filters in any parametric equalizer (Wavelet, Equalizer APO, Peace, or a player with parametric EQ). Calculated by AutoEQ from its measured frequency response.
| Filter | Frequency | Gain | Q |
|---|---|---|---|
| Low shelf | 105 Hz | +0.8 dB | 0.70 |
| Peak | 193 Hz | -6.3 dB | 0.42 |
| Peak | 1,179 Hz | +7.1 dB | 1.04 |
| Peak | 4,125 Hz | +6.1 dB | 3.17 |
| Peak | 234 Hz | -0.8 dB | 1.23 |
| High shelf | 10,000 Hz | +4.7 dB | 0.70 |
| Peak | 2,937 Hz | -2.0 dB | 4.01 |
| Peak | 45 Hz | -0.4 dB | 1.98 |
| Peak | 3,451 Hz | +1.8 dB | 6.00 |
| Peak | 7,947 Hz | -2.5 dB | 4.77 |
- Reviews, Comparisons and Sound Samples