Short answer: pick the M-Audio BX4 D3 if you want sound quality that has been measured and ranked; the Midiplus MI5 II V2 is unmeasured so far, so its case rests on features and price.
What the Midiplus MI5 II V2 offers: The second generation of Midiplus’s larger powered monitor pair: a 5.25” woven fiberglass woofer and a 1” silk dome tweeter behind a metal mesh guard in each wooden, rear ported cabinet, driven by 2x 35W of Class D power.
What the M-Audio BX4 D3 brings: Balanced TRS, RCA and front auxiliary/headphone connections, plus tone controls, make this a flexible inexpensive desktop pair.
On paper: The Midiplus MI5 II V2 is rated down to 60Hz against 69Hz, though makers quote these at different tolerances.
Buy the M-Audio BX4 D3 if you want a speaker whose sound quality has been measured and ranked.
Buy the Midiplus MI5 II V2 if you want deeper rated bass and Bluetooth, and you can wait for measurements to confirm how it sounds.
Still deciding? The full Powered Home rankings cover every ranked option.
Specifications Side By Side
| Midiplus MI5 II V2 | M-Audio BX4 D3 | |
|---|---|---|
| Price | - | $149 per pair |
| Ranked | - | #50 of 67 in Medium Size Powered Bookshelf Speakers |
| AES Input | No | No |
| Amplifier Power | 2x 35W (Class D) | 120W peak system |
| Aux Input | Yes | Yes |
| Bluetooth | Yes | No |
| Bluetooth Codecs | SBC | - |
| Bluetooth Version | 5.0 | - |
| Coaxial Input | No | No |
| Dimensions | 290H x 170W x 224D mm | 8.9H x 6.1W x 6.9D in |
| Drivers | 1” silk dome tweeter, 5.25” woven fiberglass woofer | 1” dome tweeter, 4.5” Kevlar woofer |
| Enclosure | Powered 2-way rear-ported, wooden cabinet | 2-way powered stereo pair, rear-ported |
| Frequency Response | 60Hz - 20kHz (Manufacturer specified) | 69Hz - 22kHz (Manufacturer specified) |
| HDMI Input | No | No |
| Inputs | 1/4” TRS, RCA, 3.5mm, Bluetooth | TRS, RCA, 3.5mm aux; headphone output |
| Optical Input | No | No |
| RCA Input | Yes | Yes |
| Subwoofer Output | No | - |
| TRS Input | Yes | Yes |
| USB Input | No | No |
| Weight | 7.37 kg per pair | 9.7 lbs (4.4 kg)/pair |
| XLR Input | No | No |
| Spinorama Preference Score | - | 3.29 |
| Spinorama Preference Score with Perfect Sub | - | 6.03 |
Prices on this page were last checked September 29, 2026 at 3:43 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.
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The Two Speakers In Full
Midiplus MI5 II V2 eBay
Older model: the Midiplus MI5 II (rated 3/5).
Pros: The second generation of Midiplus’s larger powered monitor pair: a 5.25” woven fiberglass woofer and a 1” silk dome tweeter behind a metal mesh guard in each wooden, rear ported cabinet, driven by 2x 35W of Class D power. Inputs cover balanced 1/4” TRS, RCA, a 3.5mm aux input and Bluetooth 5.0. Midiplus rates it at 60Hz to 20kHz.
Cons: No independent measurements have been published yet, so its tonal balance can’t be compared with ranked speakers. The MI5 II it replaces measured poorly on spinorama.org (a 2.24 preference score, with a wide 9.4dB midrange span), and there is no data yet showing whether the V2 improves on it. It has no subwoofer output for extending the bass below its 60Hz rating. It is mainly sold through Midiplus’s European and Asian distributors, with no US retailer yet.
Full Midiplus MI5 II V2 review and specifications →
| AES Input | No |
|---|---|
| Amplifier Power | 2x 35W (Class D) |
| Aux Input | Yes |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC |
| Bluetooth Version | 5.0 |
| Coaxial Input | No |
| Dimensions | 290H x 170W x 224D mm |
| Drivers | 1” silk dome tweeter, 5.25” woven fiberglass woofer |
| Enclosure | Powered 2-way rear-ported, wooden cabinet |
| Frequency Response | 60Hz - 20kHz (Manufacturer specified) |
| HDMI Input | No |
| Inputs | 1/4” TRS, RCA, 3.5mm, Bluetooth |
| Optical Input | No |
| RCA Input | Yes |
| Subwoofer Output | No |
| TRS Input | Yes |
| USB Input | No |
| Weight | 7.37 kg per pair |
| XLR Input | No |
- Links
- Reviews, Comparisons and Sound Samples
- These figures are manufacturer-specified rather than independently measured.
- Head-to-Head Comparisons
M-Audio BX4 D3: $149 per pair Amazon eBay
Pros: Balanced TRS, RCA and front auxiliary/headphone connections, plus tone controls, make this a flexible inexpensive desktop pair. The third-party measurement gives scores of 3.29 standalone and 6.03 with an ideal subwoofer, with -3dB bass estimated around 67Hz.
Cons: A rising response of about 0.62dB per octave and listening-window deviation of 0.546 indicate bright, locally uneven reproduction. The compact system suits moderate nearfield use; the preference estimate does not verify high-level headroom.
Full M-Audio BX4 D3 review and specifications →
| AES Input | No |
|---|---|
| Amplifier Power | 120W peak system |
| Aux Input | Yes |
| Bluetooth | No |
| Coaxial Input | No |
| Dimensions | 8.9H x 6.1W x 6.9D in |
| Drivers | 1” dome tweeter, 4.5” Kevlar woofer |
| Enclosure | 2-way powered stereo pair, rear-ported |
| Frequency Response | 69Hz - 22kHz (Manufacturer specified) |
| HDMI Input | No |
| Inputs | TRS, RCA, 3.5mm aux; headphone output |
| Optical Input | No |
| RCA Input | Yes |
| Spinorama Preference Score | 3.29 |
| Spinorama Preference Score with Perfect Sub | 6.03 |
| TRS Input | Yes |
| USB Input | No |
| Weight | 9.7 lbs (4.4 kg)/pair |
| XLR Input | No |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons