Short answer: the KRK Classic 5. It ranks #72 of 100 powered bookshelf speakers by sound quality, rated 3.4/5, at $319.99. The Fluid Audio FX50 V2 ranks #95, rated 2.7/5, at $298, $21.99 cheaper, which does not close the gap in sound quality.
The KRK Classic 5 is the more accurate pick. ASR’s Klippel data gives -3dB bass around 60Hz and a 5.99 preference score with an ideal subwoofer. Its measured preference score, a predictor of how neutral it sounds, is 3.47 against 1.80 for the Fluid Audio FX50 V2. Watch for: The native standalone score is 3.47 and the midrange span is a large 6.5dB.
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 catch: Scores of 1.80 standalone and 4.42 with an ideal subwoofer indicate poor native tonal accuracy.
Buy the KRK Classic 5. It is rated higher for sound quality, and the $21.99 you would save on the Fluid Audio FX50 V2 does not close the gap.
Still deciding? The full Powered Home rankings cover every ranked option.
Specifications Side By Side
| KRK Classic 5 | Fluid Audio FX50 V2 | |
|---|---|---|
| Price | $319.99 per pair | $298 per pair |
| Ranked | #72 of 100 in Medium Size Powered Bookshelf Speakers | #95 of 100 in Medium Size Powered Bookshelf Speakers |
| Bass Extension (-3dB) | 60.1Hz (Spinorama/Audio Science Review) | - |
| Bass Extension (-6dB) | 54.2Hz (Spinorama/Audio Science Review) | - |
| Spinorama Preference Score | 3.47 | 1.80 |
| Dimensions | 9.7”H x 7.4”W x 11.2”D (246.4 x 188 x 284.5 mm) | 9.2H x 6.9W x 9.1D in |
| Frequency Response | 56Hz-30kHz (+-3dB) (Manufacturer specified) | 49Hz-22kHz +/-2dB |
| Inputs | RCA, TRS, XLR | XLR/TRS and RCA |
| Weight | 12.9 lbs (5.87 kg) | 8.4 lbs (3.8 kg) each |
| Drivers | 5” (127mm) woofer | 1-inch silk tweeter coaxially mounted in 5-inch paper woofer |
| App | No | - |
| Bluetooth | No | No |
| EQ | Yes (Room adjustment) | - |
| Amplifier Power | 50w RMS Per Speaker | 90W each |
| Spinorama Preference Score with Perfect Sub | 5.99 | 4.42 |
| XLR Input | Yes | 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 | No | No |
| Enclosure | - | Active coaxial, front-ported |
| Maximum SPL | - | 110dB |
Related Speaker Comparisons
How KRK Classic 5 compares with other leading options:
- KRK Classic 5 vs Genelec 8331A
- KRK Classic 5 vs Neumann KH120 MKII
- KRK Classic 5 vs Genelec 8030C
- Neumann KH80 DSP vs KRK Classic 5
- KRK Classic 5 vs Reflector Audio Square Two
Prices on this page were last checked October 9, 2026 at 8:01 AM 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
KRK Classic 5: $319.99 per pair Amazon eBay
Pros: ASR’s Klippel data gives -3dB bass around 60Hz and a 5.99 preference score with an ideal subwoofer. Broad tonal correction can improve it, so it may be useful to someone willing to measure and EQ a basic studio setup. Measured bass extension of 60.1Hz (-3dB).
Cons: The native standalone score is 3.47 and the midrange span is a large 6.5dB. Excess treble and crossover/directivity errors keep it from being neutral out of the box, while low-bass distortion limits loud playback. Modeled EQ scores are not stock performance and do not demonstrate corrected distortion or dispersion.
Full KRK Classic 5 review and specifications →
| AES Input | No |
|---|---|
| Amplifier Power | 50w RMS Per Speaker |
| App | No |
| Aux Input | No |
| Bass Extension (-3dB) | 60.1Hz (Spinorama/Audio Science Review) |
| Bass Extension (-6dB) | 54.2Hz (Spinorama/Audio Science Review) |
| Bluetooth | No |
| Coaxial Input | No |
| Dimensions | 9.7”H x 7.4”W x 11.2”D (246.4 x 188 x 284.5 mm) |
| Drivers | 5” (127mm) woofer |
| EQ | Yes (Room adjustment) |
| Frequency Response | 56Hz-30kHz (+-3dB) (Manufacturer specified) |
| HDMI Input | No |
| Inputs | RCA, TRS, XLR |
| Optical Input | No |
| RCA Input | Yes |
| Spinorama Preference Score | 3.47 |
| Spinorama Preference Score with Perfect Sub | 5.99 |
| TRS Input | Yes |
| USB Input | No |
| Weight | 12.9 lbs (5.87 kg) |
| XLR Input | Yes |
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- Audio Science Review Measurements (spinorama.org)
- Head-to-Head Comparisons
Fluid Audio FX50 V2: $298 per pair Fluid Audio eBay
Older model: the Fluid Audio FX50 (ranked higher, rated 2.8/5).
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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