Short answer: the Vanatoo Transparent One Encore Plus for better sound quality, the JBL One Series 104 for the lower price. The Vanatoo Transparent One Encore Plus ranks #32 of 60 powered bookshelf speakers at $699.99. The JBL One Series 104 ranks #58 at $129, $570.99 cheaper.
What the Vanatoo Transparent One Encore Plus offers: Smooth, relatively flat on-axis response instead of the pronounced mid-bass-and-treble “V curve” common in this size class, which tends to cause listener fatigue over long sessions. A waveguide plus phase plug on the tweeter helps spread off-axis energy more evenly, giving good vertical consistency. Included remote controls volume, source, and separate treble/mid-bass trim, letting you tune the tonal balance without a computer or app. Subwoofer output with automatic 80/125 Hz crossover engagement when a sub is connected. Extensive wired inputs: USB, optical, coax, and analog, plus Bluetooth. 240W total power is enough headroom for near-field desktop use or a small-to-medium living room. Watch for: A slight sibilance/edge in the 4-6 kHz lower-treble region stood out to the reviewer as mildly fatiguing, though a single band of parametric EQ (about -2dB) fixed it; toeing the speakers off-axis reduces but doesn’t eliminate it. A minor scoop in the 1-2 kHz mid-range is audible in A/B comparison but not problematic on its own. No HDMI input, a drawback if you want to use these as TV speakers via ARC. Like most stand-mount speakers this size, real output below about 40 Hz needs a subwoofer - the reviewer recommends pairing one regardless of use case just to take headroom pressure off the mains.
What the JBL One Series 104 offers: Heavy internal EQ from the amplifier meaningfully compensates for otherwise poor raw driver measurements, and casual listening on undemanding content sounded like a scaled-down JBL 305P Mark II - well above typical computer-speaker quality for the price. Solid build quality for a $90-130 powered pair with dual built-in amplifiers. Watch for: Measuring the passive drivers alone (bypassing the amplifier’s EQ) showed “no bass, no low mids, and highly irregular highs” - a disaster by the reviewer’s description. Even with the amplifier’s correction applied, there’s an on-axis cancellation around 7.4kHz from the coaxial driver design, and JBL’s own published frequency-response graph uses a compressed 95dB vertical scale that hides real deviations the reviewer’s 50dB-scale CEA-2034 measurement reveals. Female vocals and “lisping” content became bright and annoying; the reviewer’s verdict was “can’t recommend it though if you want a true hi-fi experience.”
Buy the Vanatoo Transparent One Encore Plus if sound quality matters more than the price. Buy the JBL One Series 104 if the price matters more than sound quality.
If sound quality matters at all to you, skip the JBL One Series 104. It ranks near the bottom of the 60 powered bookshelf speakers, so look higher up the list instead.
Specifications Side By Side
| Vanatoo Transparent One Encore Plus | JBL One Series 104 | |
|---|---|---|
| Price | $699.99 | $129 |
| Ranked | #32 of 60 in Medium Size Powered Bookshelf Speakers | #58 of 60 in Medium Size Powered Bookshelf Speakers |
| Drivers | 5.25" aluminum-cone woofer with XBL motor, 5.25" passive radiator (rear), 1" aluminum dome tweeter with waveguide and phase plug | 4.5" coaxial low-frequency driver, 0.75" soft dome tweeter |
| Output Power | 240W total (100W + 20W Class D amplifiers per enclosure) | 60W total Class D (30W per speaker) |
| Inputs | USB, Optical, Coax, Analog, Bluetooth | - |
| Dimensions | 10"H x 6.5"W x 8"D (254 x 165 x 203mm) | 9.7H x 6W x 4.9D in (per manufacturer, 104-BT) |
| Weight | 10.8 lbs (passive unit), 12.2 lbs (active unit) | 4.5 lbs / 2.06 kg (master), 3.8 lbs / 1.73 kg (slave) |
| Bass Extension (-3dB) | 42Hz (measured, Erin’s Audio Corner) | 45Hz with the amplifier’s DSP bass boost active (measured, Audio Science Review) |
| Bass Extension (-10dB) | 34Hz (measured, Erin’s Audio Corner) | 35Hz with the amplifier’s DSP bass boost active (measured, Audio Science Review) |
| Frequency Response | 48Hz - 20kHz ±3dB (manufacturer specified, Flat mode) | 60Hz - 20kHz (Manufacturer specified) |
| App | - | No |
| EQ | - | Yes (fixed, amplifier-applied) |
| DSP | - | Yes |
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The Two Speakers In Full
Vanatoo Transparent One Encore Plus: $699.99 Amazon eBay
Pros: Smooth, relatively flat on-axis response instead of the pronounced mid-bass-and-treble “V curve” common in this size class, which tends to cause listener fatigue over long sessions. A waveguide plus phase plug on the tweeter helps spread off-axis energy more evenly, giving good vertical consistency. Included remote controls volume, source, and separate treble/mid-bass trim, letting you tune the tonal balance without a computer or app. Subwoofer output with automatic 80/125 Hz crossover engagement when a sub is connected. Extensive wired inputs: USB, optical, coax, and analog, plus Bluetooth. 240W total power is enough headroom for near-field desktop use or a small-to-medium living room.
Cons: A slight sibilance/edge in the 4-6 kHz lower-treble region stood out to the reviewer as mildly fatiguing, though a single band of parametric EQ (about -2dB) fixed it; toeing the speakers off-axis reduces but doesn’t eliminate it. A minor scoop in the 1-2 kHz mid-range is audible in A/B comparison but not problematic on its own. No HDMI input, a drawback if you want to use these as TV speakers via ARC. Like most stand-mount speakers this size, real output below about 40 Hz needs a subwoofer - the reviewer recommends pairing one regardless of use case just to take headroom pressure off the mains.
Full Vanatoo Transparent One Encore Plus review and specifications →
| Bass Extension (-10dB) | 34Hz (measured, Erin's Audio Corner) |
|---|---|
| Bass Extension (-3dB) | 42Hz (measured, Erin's Audio Corner) |
| Dimensions | 10"H x 6.5"W x 8"D (254 x 165 x 203mm) |
| Drivers | 5.25" aluminum-cone woofer with XBL motor, 5.25" passive radiator (rear), 1" aluminum dome tweeter with waveguide and phase plug |
| Frequency Response | 48Hz - 20kHz ±3dB (manufacturer specified, Flat mode) |
| Inputs | USB, Optical, Coax, Analog, Bluetooth |
| Output Power | 240W total (100W + 20W Class D amplifiers per enclosure) |
| Weight | 10.8 lbs (passive unit), 12.2 lbs (active unit) |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
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- Vanatoo Transparent One Encore Plus vs Edifier R1280DB
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JBL One Series 104: $129 Amazon eBay
Pros: Heavy internal EQ from the amplifier meaningfully compensates for otherwise poor raw driver measurements, and casual listening on undemanding content sounded like a scaled-down JBL 305P Mark II - well above typical computer-speaker quality for the price. Solid build quality for a $90-130 powered pair with dual built-in amplifiers.
Cons: Measuring the passive drivers alone (bypassing the amplifier’s EQ) showed “no bass, no low mids, and highly irregular highs” - a disaster by the reviewer’s description. Even with the amplifier’s correction applied, there’s an on-axis cancellation around 7.4kHz from the coaxial driver design, and JBL’s own published frequency-response graph uses a compressed 95dB vertical scale that hides real deviations the reviewer’s 50dB-scale CEA-2034 measurement reveals. Female vocals and “lisping” content became bright and annoying; the reviewer’s verdict was “can’t recommend it though if you want a true hi-fi experience.”
Full JBL One Series 104 review and specifications →
| App | No |
|---|---|
| Bass Extension (-10dB) | 35Hz with the amplifier's DSP bass boost active (measured, Audio Science Review) |
| Bass Extension (-3dB) | 45Hz with the amplifier's DSP bass boost active (measured, Audio Science Review) |
| DSP | Yes |
| Dimensions | 9.7H x 6W x 4.9D in (per manufacturer, 104-BT) |
| Drivers | 4.5" coaxial low-frequency driver, 0.75" soft dome tweeter |
| EQ | Yes (fixed, amplifier-applied) |
| Frequency Response | 60Hz - 20kHz (Manufacturer specified) |
| Output Power | 60W total Class D (30W per speaker) |
| Weight | 4.5 lbs / 2.06 kg (master), 3.8 lbs / 1.73 kg (slave) |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
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