Short answer: the Audioengine HD6 on measured sound quality, the Audioengine HD4 on price. The Audioengine HD6 ranks #79 of 108 powered bookshelf speakers, rated 3.3/5, at $1,048. The Audioengine HD4 ranks #87, rated 3.2/5, at $429, $619 cheaper.
Why pick the Audioengine HD6: A self-contained powered stereo pair with Bluetooth, analog and optical inputs, and an RCA output, no separate amplifier needed. Watch for: Listening impressions describe bass and treble emphasis with a recessed midrange, which may suit casual listening better than neutral monitoring.
What the Audioengine HD4 does well: A compact powered pair with Bluetooth, analog inputs and an RCA output for a tidy desktop stereo. The tradeoff: The compact cabinets suit close desktop listening rather than a large-room system.
Buy the Audioengine HD6 if sound quality matters more than the price. Buy the Audioengine HD4 if the price matters more than sound quality.
Looking for alternatives? See the complete Powered Home rankings.
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
| Audioengine HD6 | Audioengine HD4 | |
|---|---|---|
| Price | $1,048.00 per pair | $429.00 per pair |
| Ranked | #79 of 108 in Medium Size Powered Bookshelf Speakers | #87 of 108 in Medium Size Powered Bookshelf Speakers |
| Dimensions | 11.7”H x 7.2”W x 10”D (298.4 x 184.1 x 254 mm) | 9”H x 5.5”W x 6.5”D (228.6 x 139.7 x 165.1 mm) |
| Frequency Response | 45Hz-40kHz (-3dB) (Manufacturer specified) | 60 Hz-20 kHz (-3dB) (Manufacturer specified) |
| Inputs | Bluetooth, Aux, RCA Input, Digital Optical | Bluetooth, Aux, RCA Input |
| Outputs | RCA variable output (subwoofer) | RCA variable output (subwoofer) |
| Weight | 17.4 lbs (7.9 kg) | 7.3 lbs (3.3 kg) |
| Drivers | 5.5” (140mm) woofer | 4” (102mm) woofer |
| App | No | No |
| Bluetooth | Yes | Yes |
| Bluetooth Version | 5.0 | 5.0 |
| Bluetooth Codecs | SBC, AAC, aptX, aptX HD | SBC, AAC, aptX, aptX HD |
| EQ | No | No |
| Amplifier Power | 50w RMS Per Speaker | 50w RMS Per Speaker |
| Subwoofer Output | Yes | Yes |
| XLR Input | No | No |
| RCA Input | Yes | Yes |
| TRS Input | No | No |
| Optical Input | Yes | No |
| Coaxial Input | No | No |
| USB Input | No | No |
| HDMI Input | No | No |
| AES Input | No | No |
| Aux Input | Yes | Yes |
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