Short answer: the Midiplus MI5 II. It ranks #62 of 67 powered bookshelf speakers by sound quality, rated 3.0/5, at $169. The Fluid Audio FX50 V2 ranks #64, rated 2.7/5, at $149, $20 cheaper, not enough of a saving to outweigh the sound-quality gap.
The case for the Midiplus MI5 II: Balanced inputs, Bluetooth and a powered-pair format offer useful connectivity. The tradeoff: The 2.24 standalone and 4.53 ideal-subwoofer scores show significant problems above the bass region.
The case for the Fluid Audio FX50 V2: The coaxial geometry and mounting provisions allow flexible physical orientation, while balanced inputs and boundary controls suit a compact studio installation. The tradeoff: Scores of 1.80 standalone and 4.42 with an ideal subwoofer indicate poor native tonal accuracy.
Buy the Midiplus MI5 II. It is rated higher for sound quality, and saving $20 with the Fluid Audio FX50 V2 does not make up for the sound-quality gap.
Still deciding? The full Powered Home rankings cover every ranked option.
Specifications Side By Side
| Midiplus MI5 II | Fluid Audio FX50 V2 | |
|---|---|---|
| Price | $169 per pair | $298 per pair |
| Ranked | #62 of 67 in Medium Size Powered Bookshelf Speakers | #64 of 67 in Medium Size Powered Bookshelf Speakers |
| Enclosure | Powered 2-way rear-ported | Active coaxial, front-ported |
| Drivers | 1-inch silk tweeter, 5-inch fiberglass woofer | 1-inch silk tweeter coaxially mounted in 5-inch paper woofer |
| Frequency Response | 50Hz-25kHz | 49Hz-22kHz +/-2dB |
| Amplifier Power | 100W RMS per pair | 90W each |
| Maximum SPL | 103dB | 110dB |
| Inputs | TRS, RCA, 3.5mm, Bluetooth | XLR/TRS and RCA |
| Dimensions | 10.1H x 6.7W x 9.4D in | 9.2H x 6.9W x 9.1D in |
| Spinorama Preference Score | 2.24 | 1.80 |
| Spinorama Preference Score with Perfect Sub | 4.53 | 4.42 |
| XLR Input | No | Yes |
| RCA Input | Yes | Yes |
| TRS Input | Yes | Yes |
| Optical Input | No | No |
| Coaxial Input | No | No |
| USB Input | No | No |
| HDMI Input | No | No |
| AES Input | No | No |
| Aux Input | Yes | No |
| Bluetooth | Yes | No |
| Weight | - | 8.4 lbs (3.8 kg) each |
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Prices on this page were last checked September 23, 2026 at 11:24 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: $169 per pair eBay
Pros: Balanced inputs, Bluetooth and a powered-pair format offer useful connectivity. The measured -3dB point is around 54Hz, so it reaches lower in the bass than some compact monitors.
Cons: The 2.24 standalone and 4.53 ideal-subwoofer scores show significant problems above the bass region. A large 9.4dB midrange response span and listening-window narrow-band deviation of 0.644 indicate substantial coloration even though the overall response slope is fairly mild. A subwoofer cannot fix those irregularities. Amplifier-power specifications do not establish clean output.
Full Midiplus MI5 II review and specifications →
| AES Input | No |
|---|---|
| Amplifier Power | 100W RMS per pair |
| Aux Input | Yes |
| Bluetooth | Yes |
| Coaxial Input | No |
| Dimensions | 10.1H x 6.7W x 9.4D in |
| Drivers | 1-inch silk tweeter, 5-inch fiberglass woofer |
| Enclosure | Powered 2-way rear-ported |
| Frequency Response | 50Hz-25kHz |
| HDMI Input | No |
| Inputs | TRS, RCA, 3.5mm, Bluetooth |
| Maximum SPL | 103dB |
| Optical Input | No |
| RCA Input | Yes |
| Spinorama Preference Score | 2.24 |
| Spinorama Preference Score with Perfect Sub | 4.53 |
| TRS Input | Yes |
| USB Input | No |
| XLR Input | No |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
Fluid Audio FX50 V2: $298 per pair Fluid Audio eBay
Pros: The coaxial geometry and mounting provisions allow flexible physical orientation, while balanced inputs and boundary controls suit a compact studio installation. Bass reaches -3dB around 67Hz in ASR’s selected measurement.
Cons: Scores of 1.80 standalone and 4.42 with an ideal subwoofer indicate poor native tonal accuracy. Listening-window and predicted-room narrow-band deviations are both around 0.80, showing irregular sound for both the listener and room reflections. Coaxial construction does not guarantee smooth dispersion or neutral reproduction, and correction features should not be credited as a proven fix.
Full Fluid Audio FX50 V2 review and specifications →
| AES Input | No |
|---|---|
| Amplifier Power | 90W each |
| Aux Input | No |
| Bluetooth | No |
| Coaxial Input | No |
| Dimensions | 9.2H x 6.9W x 9.1D in |
| Drivers | 1-inch silk tweeter coaxially mounted in 5-inch paper woofer |
| Enclosure | Active coaxial, front-ported |
| Frequency Response | 49Hz-22kHz +/-2dB |
| HDMI Input | No |
| Inputs | XLR/TRS and RCA |
| Maximum SPL | 110dB |
| Optical Input | No |
| RCA Input | Yes |
| Spinorama Preference Score | 1.80 |
| Spinorama Preference Score with Perfect Sub | 4.42 |
| TRS Input | Yes |
| USB Input | No |
| Weight | 8.4 lbs (3.8 kg) each |
| XLR Input | Yes |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
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