Short answer: the Vanatoo Transparent One Encore Plus for better sound quality, the Adam Audio A4V for the lower price. The Vanatoo Transparent One Encore Plus ranks #15 of 65 powered bookshelf speakers at $699.99. The Adam Audio A4V ranks #42 at $599.99, $100 cheaper.
What the Adam Audio A4V offers: Compact monitor with onboard DSP, placement controls and room-correction integration. ASR’s Klippel data gives a -3dB point around 59Hz and preference scores of 3.02 standalone and 5.43 with an ideal subwoofer. Its adjustment facilities are useful when placement or tonal correction is needed. Watch for: A small average-deviation figure hides a major localized response irregularity: the selected measurement spans 10.8dB from 300Hz to 5kHz, and listening-window narrow-band deviation is 0.547. The native response should therefore not be called smoothly neutral. Correction potential is not the same as stock performance, and analog audio inputs mean a separate interface is needed for USB sources.
What the Vanatoo Transparent One Encore Plus offers: Erin’s Klippel data combines a small 1.7dB midrange response span with a -3dB point around 44Hz. Scores of 4.68 standalone and 6.49 with an ideal subwoofer make it an attractive standalone system as well as a subwoofer partner. Remote tone controls, multiple digital and analog inputs, and automatic subwoofer crossover engagement simplify setup. Watch for: A mild 4-6kHz edge and a smaller 1-2kHz recession were audible in the review, so its smooth midrange summary does not mean there is nothing to improve with EQ. No HDMI ARC. Deep bass and louder playback still benefit from a subwoofer; amplifier wattage alone does not establish clean room-filling output.
Buy the Adam Audio A4V if the price is the priority over sound quality, or the Vanatoo Transparent One Encore Plus if sound quality is the priority over the price.
Looking for alternatives? See the complete Powered Home rankings.
Specifications Side By Side
| Adam Audio A4V | Vanatoo Transparent One Encore Plus | |
|---|---|---|
| Price | $1,199.98 per pair | $699.99 per pair |
| Ranked | #42 of 65 in Medium Size Powered Bookshelf Speakers | #15 of 65 in Medium Size Powered Bookshelf Speakers |
| Enclosure | 2-way active, dual front ports | - |
| Drivers | X-ART folded-ribbon tweeter, 4" MLM woofer | 5.25" aluminum-cone woofer with XBL motor, 5.25" passive radiator (rear), 1" aluminum dome tweeter with waveguide and phase plug |
| Dimensions | 10.6H x 6.2W x 8.7D in | 10" x 6.5" x 8" (254 x 165 x 203 mm) |
| Weight | 12.8 lbs (5.8 kg) each | 10.8 lbs (4.9 kg) (passive unit), 12.1 lbs (5.5 kg) (active unit) |
| Amplifier Power | 130W RMS each | 240W total (100W + 20W Class D amplifiers per enclosure) |
| Inputs | XLR and RCA; Ethernet for control | USB, Optical, Coax, Analog, Bluetooth |
| Spinorama Preference Score | 3.02 | 4.68 |
| Spinorama Preference Score with Perfect Sub | 5.43 | 6.49 |
| Bluetooth Codecs | - | SBC, AAC, aptX, aptX HD |
| Bass Extension (-3dB) | - | 42Hz (measured, Erin's Audio Corner) |
| Bass Extension (-10dB) | - | 34Hz (measured, Erin's Audio Corner) |
| Frequency Response | - | 48Hz - 20kHz ±3dB (manufacturer specified, Flat mode) |
| Subwoofer Output | - | Yes |
| Outputs | - | RCA subwoofer |
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Prices on this page were last checked September 16, 2026 at 12:41 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
Adam Audio A4V: $1,199.98 per pair B&H Photo Video eBay
Pros: Compact monitor with onboard DSP, placement controls and room-correction integration. ASR’s Klippel data gives a -3dB point around 59Hz and preference scores of 3.02 standalone and 5.43 with an ideal subwoofer. Its adjustment facilities are useful when placement or tonal correction is needed.
Cons: A small average-deviation figure hides a major localized response irregularity: the selected measurement spans 10.8dB from 300Hz to 5kHz, and listening-window narrow-band deviation is 0.547. The native response should therefore not be called smoothly neutral. Correction potential is not the same as stock performance, and analog audio inputs mean a separate interface is needed for USB sources.
Full Adam Audio A4V review and specifications →
| Amplifier Power | 130W RMS each |
|---|---|
| Dimensions | 10.6H x 6.2W x 8.7D in |
| Drivers | X-ART folded-ribbon tweeter, 4" MLM woofer |
| Enclosure | 2-way active, dual front ports |
| Inputs | XLR and RCA; Ethernet for control |
| Spinorama Preference Score | 3.02 |
| Spinorama Preference Score with Perfect Sub | 5.43 |
| Weight | 12.8 lbs (5.8 kg) each |
- Links
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Vanatoo Transparent One Encore Plus: $699.99 per pair Amazon eBay
Pros: Erin’s Klippel data combines a small 1.7dB midrange response span with a -3dB point around 44Hz. Scores of 4.68 standalone and 6.49 with an ideal subwoofer make it an attractive standalone system as well as a subwoofer partner. Remote tone controls, multiple digital and analog inputs, and automatic subwoofer crossover engagement simplify setup. Measured bass extension of 42Hz (-3dB).
Cons: A mild 4-6kHz edge and a smaller 1-2kHz recession were audible in the review, so its smooth midrange summary does not mean there is nothing to improve with EQ. No HDMI ARC. Deep bass and louder playback still benefit from a subwoofer; amplifier wattage alone does not establish clean room-filling output.
Full Vanatoo Transparent One Encore Plus review and specifications →
| Amplifier Power | 240W total (100W + 20W Class D amplifiers per enclosure) |
|---|---|
| Bass Extension (-10dB) | 34Hz (measured, Erin's Audio Corner) |
| Bass Extension (-3dB) | 42Hz (measured, Erin's Audio Corner) |
| Bluetooth Codecs | SBC, AAC, aptX, aptX HD |
| Dimensions | 10" x 6.5" x 8" (254 x 165 x 203 mm) |
| 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 |
| Outputs | RCA subwoofer |
| Spinorama Preference Score | 4.68 |
| Spinorama Preference Score with Perfect Sub | 6.49 |
| Subwoofer Output | Yes |
| Weight | 10.8 lbs (4.9 kg) (passive unit), 12.1 lbs (5.5 kg) (active unit) |
- Links
- Reviews, Comparisons and Sound Samples
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