Short answer: the JBL One Series 104-BT, though neither ranks well in its class. It ranks #99 of 105 powered bookshelf speakers by sound quality, rated 2.8/5, at $198; the Fluid Audio FX50 V2 ranks #100, rated 2.7/5, and costs $298, which makes this an easy call rather than a real tradeoff. Both are rated below 3.0/5 among the 105 powered bookshelf speakers, so if sound quality matters, consider the Klipsch The Fives instead, ranked #17 at $324.95.
The case for the JBL One Series 104-BT: The JBL One Series 104 with Bluetooth 5.0 added: the same 4.5” coaxial woofer and 3/4” tweeter, 30W per speaker and RCA, 1/8” and balanced 1/4” inputs, so it works as a compact desktop system with or without a cable. Watch for: No independent measurements yet, so its tonal balance and directivity can’t be compared with ranked speakers.
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 JBL One Series 104-BT. It is rated higher for sound quality than the Fluid Audio FX50 V2 and costs less, so it is the default pick unless a specific strength of the other one matters more to you.
Worth knowing: the JBL One Series 104-BT has not been measured yet. Its rating is estimated from related models, with a likely range of 2.6 to 3.0, so treat this verdict as provisional.
Still deciding? The full Powered Home rankings cover every ranked option.
Specifications Side By Side
| JBL One Series 104-BT | Fluid Audio FX50 V2 | |
|---|---|---|
| Price | $198.00 per pair | $298 per pair |
| Ranked | #99 of 105 in Medium Size Powered Bookshelf Speakers Estimated | #100 of 105 in Medium Size Powered Bookshelf Speakers |
| Dimensions | 9.7”H x 6”W x 4.9”D (247 x 153 x 124 mm) | 9.2H x 6.9W x 9.1D in |
| Bluetooth | Yes | No |
| Drivers | 1x 0.75” soft dome tweeter, 1x 4.5” coaxial low-frequency driver | 1-inch silk tweeter coaxially mounted in 5-inch paper woofer |
| Frequency Response | 88Hz - 20kHz (-3dB, manufacturer specified) | 49Hz-22kHz +/-2dB |
| Amplifier Power | 60W (30W per speaker, Class D) | 90W each |
| Inputs | Bluetooth 5.0, 1/8” Aux, RCA, 1/4” TRS balanced | XLR/TRS and RCA |
| Enclosure | - | Active coaxial, front-ported |
| Maximum SPL | - | 110dB |
| Weight | - | 8.4 lbs (3.8 kg) each |
| Spinorama Preference Score | - | 1.80 |
| Spinorama Preference Score with Perfect Sub | - | 4.42 |
| XLR Input | - | Yes |
| RCA Input | - | Yes |
| TRS Input | - | Yes |
| Optical Input | - | No |
| Coaxial Input | - | No |
| USB Input | - | No |
| HDMI Input | - | No |
| AES Input | - | No |
| Aux Input | - | No |
Related Speaker Comparisons
More worthwhile head-to-heads for JBL One Series 104-BT:
- M-Audio BX4 BT vs JBL One Series 104-BT
- Edifier R1700BT vs JBL One Series 104-BT
- Fluid Audio FX50 V2 vs PreSonus Eris E5
- Fluid Audio FX50 V2 vs Edifier R1700BT
- Edifier MR4 vs Fluid Audio FX50 V2
Prices on this page were last checked October 11, 2026 at 4:59 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
JBL One Series 104-BT: $198.00 per pair Estimated Amazon eBay
Older model: the JBL One Series 104 (ranked higher, rated 2.8/5). See every JBL One Series 104 generation.
Pros: The JBL One Series 104 with Bluetooth 5.0 added: the same 4.5” coaxial woofer and 3/4” tweeter, 30W per speaker and RCA, 1/8” and balanced 1/4” inputs, so it works as a compact desktop system with or without a cable.
Cons: No independent measurements yet, so its tonal balance and directivity can’t be compared with ranked speakers. Bass rolls off at 88Hz (-3dB), so it sounds thin without a subwoofer, and output is modest for anything beyond a desk.
Full JBL One Series 104-BT review and specifications →
| Released | Feb 2020 (6 years ago) |
|---|---|
| Amplifier Power | 60W (30W per speaker, Class D) |
| Bluetooth | Yes |
| Dimensions | 9.7”H x 6”W x 4.9”D (247 x 153 x 124 mm) |
| Drivers | 1x 0.75” soft dome tweeter, 1x 4.5” coaxial low-frequency driver |
| Frequency Response | 88Hz - 20kHz (-3dB, manufacturer specified) |
| Inputs | Bluetooth 5.0, 1/8” Aux, RCA, 1/4” TRS balanced |
- Links
- Reviews, Comparisons and Sound Samples
- 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). See every Fluid Audio FX50 generation.
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 →
| Released | Jul 2025 (1 year ago) |
|---|---|
| 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
- Fluid Audio FX50 V2 vs Fluid Audio FX50
- Fluid Audio FX50 V2 vs Avantone Pro Active MixCube
- Fluid Audio FX50 V2 vs Midiplus MI5 II
- Fluid Audio FX50 V2 vs Edifier R1280T
- Fluid Audio FX50 V2 vs Edifier R1280DB
- Fluid Audio FX50 V2 vs Edifier R1700BT
- Fluid Audio FX50 V2 vs Audioengine HD4
- Fluid Audio FX50 V2 vs Edifier S1000MKII
- See all 22 comparisons