Short answer: the ADAM Audio A4V for better sound quality, the Audioengine HD4 for the lower price. The ADAM Audio A4V ranks #67 of 108 powered bookshelf speakers, rated 3.6/5, at $1,099.98. The Audioengine HD4 ranks #87, rated 3.2/5, at $429, $670.98 cheaper.
The ADAM Audio A4V is the better-sounding choice. A compact studio monitor with onboard DSP, placement controls and room correction support for tricky rooms. The tradeoff: 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.
What the Audioengine HD4 does well: A compact powered pair with Bluetooth, analog inputs and an RCA output for a tidy desktop stereo. It keeps a wired aux input, which the ADAM Audio A4V lacks. Watch for: The compact cabinets suit close desktop listening rather than a large-room system.
Buy the ADAM Audio A4V if sound quality is the priority over the price, or the Audioengine HD4 if the price is the priority over sound quality.
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Prices on this page were last checked November 7, 2026 at 7:34 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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Specifications Side By Side
| ADAM Audio A4V | Audioengine HD4 | |
|---|---|---|
| Price | $1,099.98 per pair | $429.00 per pair |
| Ranked | #67 of 108 in Medium Size Powered Bookshelf Speakers | #87 of 108 in Medium Size Powered Bookshelf Speakers |
| Enclosure | 2-way active, dual front ports | - |
| Drivers | X-ART folded-ribbon tweeter, 4” MLM woofer | 4” (102mm) woofer |
| Dimensions | 10.6H x 6.2W x 8.7D in | 9”H x 5.5”W x 6.5”D (228.6 x 139.7 x 165.1 mm) |
| Weight | 12.8 lbs (5.8 kg) each | 7.3 lbs (3.3 kg) |
| Amplifier Power | 130W RMS each | 50w RMS Per Speaker |
| Inputs | XLR and RCA; Ethernet for control | Bluetooth, Aux, RCA Input |
| Spinorama Preference Score | 3.92 | - |
| Spinorama Preference Score with Perfect Sub | 6.33 | - |
| XLR Input | Yes | No |
| RCA Input | Yes | Yes |
| TRS Input | No | No |
| Optical Input | No | No |
| Coaxial Input | No | No |
| USB Input | No | No |
| HDMI Input | No | No |
| AES Input | No | No |
| Aux Input | No | Yes |
| Bluetooth | No | Yes |
| Frequency Response | 58Hz - 41kHz (-3dB) (Manufacturer specified) | 60 Hz-20 kHz (-3dB) (Manufacturer specified) |
| Outputs | - | RCA variable output (subwoofer) |
| App | - | No |
| Bluetooth Codecs | - | SBC, AAC, aptX, aptX HD |
| EQ | - | No |
| Subwoofer Output | - | Yes |
| Bluetooth Version | - | 5.0 |
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