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: Analog and optical inputs, RCA output and built-in amplification provide a convenient self-contained stereo setup. 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: Compact powered cabinets, analog input options and RCA output can simplify a desktop stereo system. 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.
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 | - |
| 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 |
Related Speaker Comparisons
How Audioengine HD6 compares with other leading options:
- Genelec 8331A vs Audioengine HD6
- Neumann KH120 MKII vs Audioengine HD6
- Genelec 8030C vs Audioengine HD6
- Neumann KH80 DSP vs Audioengine HD6
- Dynaudio LYD 5 vs Audioengine HD6
Prices on this page were last checked October 12, 2026 at 4:13 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
Audioengine HD6: $1,048.00 per pair Amazon $1,048.00 eBay
Same family: the Audioengine HD3 (smaller bookshelf, rated 3.2/5), the Audioengine HD4 (smaller bookshelf, ranked lower, rated 3.2/5) and the Audioengine HD5 (larger bookshelf, ranked lower, estimated 3.2/5).
Pros: Analog and optical inputs, RCA output and built-in amplification provide a convenient self-contained stereo setup. The cabinet and driver size can be practical for general music listening without assembling a separate amplifier system.
Cons: Listening impressions describe bass and treble emphasis with a recessed midrange, which may suit casual listening better than neutral monitoring.
Full Audioengine HD6 review and specifications →
| Released | Nov 2015 (10 years ago) |
|---|---|
| AES Input | No |
| Amplifier Power | 50w RMS Per Speaker |
| App | No |
| Aux Input | Yes |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC, AAC, aptX, aptX HD |
| Bluetooth Version | 5.0 |
| Coaxial Input | No |
| Dimensions | 11.7”H x 7.2”W x 10”D (298.4 x 184.1 x 254 mm) |
| Drivers | 5.5” (140mm) woofer |
| EQ | No |
| Frequency Response | 45Hz-40kHz (-3dB) (Manufacturer specified) |
| HDMI Input | No |
| Inputs | Bluetooth, Aux, RCA Input, Digital Optical |
| Optical Input | Yes |
| Outputs | RCA variable output (subwoofer) |
| RCA Input | Yes |
| Subwoofer Output | Yes |
| TRS Input | No |
| USB Input | No |
| Weight | 17.4 lbs (7.9 kg) |
| XLR Input | No |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
Audioengine HD4: $429.00 per pair Amazon $429.00 eBay
Same family: the Audioengine HD3 (smaller bookshelf, rated 3.2/5), the Audioengine HD6 (larger bookshelf, ranked higher, rated 3.3/5) and the Audioengine HD5 (larger bookshelf, ranked lower, estimated 3.2/5).
Pros: Compact powered cabinets, analog input options and RCA output can simplify a desktop stereo system. Its modest footprint is useful where larger studio monitors are impractical.
Cons: The compact cabinets suit close desktop listening rather than a large-room system. A separate subwoofer adds cost and space if deeper bass is a priority.
Full Audioengine HD4 review and specifications →
| Released | 2016 (10 years ago) |
|---|---|
| AES Input | No |
| Amplifier Power | 50w RMS Per Speaker |
| App | No |
| Aux Input | Yes |
| Bluetooth | Yes |
| Bluetooth Codecs | SBC, AAC, aptX, aptX HD |
| Coaxial Input | No |
| Dimensions | 9”H x 5.5”W x 6.5”D (228.6 x 139.7 x 165.1 mm) |
| Drivers | 4” (102mm) woofer |
| EQ | No |
| Frequency Response | 60 Hz-20 kHz (-3dB) (Manufacturer specified) |
| HDMI Input | No |
| Inputs | Bluetooth, Aux, RCA Input |
| Optical Input | No |
| Outputs | RCA variable output (subwoofer) |
| RCA Input | Yes |
| Subwoofer Output | Yes |
| TRS Input | No |
| USB Input | No |
| Weight | 7.3 lbs (3.3 kg) |
| XLR Input | No |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
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