Genelec 8020D vs JBL One Series 104

Last updated: October 1, 2026

Short answer: the Genelec 8020D. It ranks #12 of 100 powered bookshelf speakers by sound quality (rated 4.4/5) at $1,390 and is still sold new; the JBL One Series 104 ranks #93 (rated 2.8/5) and is discontinued, so it is only an option used.

Genelec 8020D vs JBL One Series 104

The Genelec 8020D is the better-sounding pick. A compact waveguided monitor with balanced XLR input and placement filters, well suited to a small studio desk. The catch: Small size limits deep-bass reach and headroom.

The JBL One Series 104 is the deeper-bass pick. ASR’s powered-system measurement gives -3dB bass around 72Hz, and the compact coaxial layout is convenient for a small desk. Its bass reaches about 45Hz before falling 3dB, against 56Hz for the Genelec 8020D. It keeps a wired aux input, which the Genelec 8020D lacks. Watch for: Even with the active system measured properly, scores are only 1.36 standalone and 4.08 with an ideal subwoofer.

Buy the Genelec 8020D. It is rated higher for sound quality, and the JBL One Series 104 is discontinued, so it is only available used.

Looking for alternatives? See the complete Powered Home rankings.

Specifications Side By Side

Genelec 8020D JBL One Series 104
Price$1,390 per pair$129 per pair Discontinued
Ranked#12 of 100 in Medium Size Powered Bookshelf Speakers#93 of 100 in Medium Size Powered Bookshelf Speakers
Dimensions9.5”H x 5.8”W x 5.6”D (241.3 x 147.3 x 142.2 mm)9.7H x 6W x 4.9D in (per manufacturer, 104-BT)
Frequency Response56 Hz - 25 kHz (-6 dB) (Manufacturer specified)60Hz - 20kHz (Manufacturer specified)
InputsXLR1/4” TRS, RCA, 3.5mm Aux
Weight7.1 lbs (3.2 kg) each4.5 lbs (2.06 kg) (master), 3.8 lbs (1.73 kg) (slave)
Drivers4.1” woofer, 0.75” metal dome tweeter4.5” coaxial low-frequency driver, 0.75” soft dome tweeter
AppNoNo
Bass Extension (-10dB)50Hz (measured, Audio Science Review)35Hz with the amplifier’s DSP bass boost active (measured, Audio Science Review)
Bass Extension (-3dB)56Hz (measured, Audio Science Review)45Hz with the amplifier’s DSP bass boost active (measured, Audio Science Review)
BluetoothNoNo
EQYes (Bass tilt, desk proximity)Yes (fixed, amplifier-applied)
Amplifier Power100W (50W woofer + 50W tweeter)60W total Class D (30W per speaker)
Maximum SPL103dB @ 1m (manufacturer specified)-
XLR InputYesNo
RCA InputNoYes
TRS InputNoYes
Optical InputNoNo
Coaxial InputNoNo
USB InputNoNo
HDMI InputNoNo
AES InputNoNo
Aux InputNoYes
DSP-Yes

More top alternatives to Genelec 8020D:

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The Two Speakers In Full

Genelec 8020D: $1,390 per pair B&H Photo Video eBay

Genelec 8020D ranking card

Same family: the Genelec 8010A (smaller bookshelf, rated 4.5/5), the Genelec 8030C (larger bookshelf, ranked higher, rated 4.6/5), the Genelec 8040B (larger bookshelf, rated 4.3/5) and the Genelec 8050B (larger bookshelf, rated 4.4/5).

Pros: A compact waveguided monitor with balanced XLR input and placement filters, well suited to a small studio desk. Klippel measurements show a flat, well-behaved on-axis response from about 60Hz to 10kHz, with listening-window and early-reflection curves tracking closely, a sign of well-controlled directivity. Measured bass extension of 56Hz (-3dB).

Cons: Small size limits deep-bass reach and headroom. It lacks the GLM calibration of the SAM models, and the price is substantial for a compact analog-input monitor. Sound power starts rolling off around 500Hz to 1kHz as the small drivers begin to beam.

AES InputNo
Amplifier Power100W (50W woofer + 50W tweeter)
AppNo
Aux InputNo
Bass Extension (-10dB)50Hz (measured, Audio Science Review)
Bass Extension (-3dB)56Hz (measured, Audio Science Review)
BluetoothNo
Coaxial InputNo
Dimensions9.5”H x 5.8”W x 5.6”D (241.3 x 147.3 x 142.2 mm)
Drivers4.1” woofer, 0.75” metal dome tweeter
EQYes (Bass tilt, desk proximity)
Frequency Response56 Hz - 25 kHz (-6 dB) (Manufacturer specified)
HDMI InputNo
InputsXLR
Maximum SPL103dB @ 1m (manufacturer specified)
Optical InputNo
RCA InputNo
TRS InputNo
USB InputNo
Weight7.1 lbs (3.2 kg) each
XLR InputYes

JBL One Series 104: $129 per pair Discontinued eBay

JBL One Series 104 ranking card

Pros: ASR’s powered-system measurement gives -3dB bass around 72Hz, and the compact coaxial layout is convenient for a small desk. Its internal equalization is part of the working speaker and should be included when assessing it, rather than judging the passive drivers with that correction bypassed. Measured bass extension of 45Hz (-3dB).

Cons: Even with the active system measured properly, scores are only 1.36 standalone and 4.08 with an ideal subwoofer. The 4.9dB midrange span and a high-frequency cancellation around 7.4kHz indicate significant unevenness; the review also found some vocals bright and irritating. These are results for the original 104, not a verification of the later 104-BT. Discontinued.

AES InputNo
Amplifier Power60W total Class D (30W per speaker)
AppNo
Aux InputYes
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)
BluetoothNo
Coaxial InputNo
DSPYes
Dimensions9.7H x 6W x 4.9D in (per manufacturer, 104-BT)
Drivers4.5” coaxial low-frequency driver, 0.75” soft dome tweeter
EQYes (fixed, amplifier-applied)
Frequency Response60Hz - 20kHz (Manufacturer specified)
HDMI InputNo
Inputs1/4” TRS, RCA, 3.5mm Aux
Optical InputNo
RCA InputYes
TRS InputYes
USB InputNo
Weight4.5 lbs (2.06 kg) (master), 3.8 lbs (1.73 kg) (slave)
XLR InputNo