Short answer: the KRK Classic 5. It ranks #30 of 64 powered bookshelf speakers by sound quality at $280; the Onkyo GX-30ARC ranks #43 and costs $349, so there is not much of a tradeoff to weigh.
What the KRK Classic 5 offers: High-quality Klippel NFS data produces a 5.22 Spinorama preference score with a subwoofer, essentially level with the Edifier MR4. Bass reaches 60.1Hz at -3dB and 54.2Hz at -6dB, and the speaker responds especially well to EQ: Spinorama’s corrected score rises from 2.71 to 5.34 without a subwoofer and from 5.22 to 7.71 with one. Watch for: The unequalized response has a large 6.5dB frequency-deviation band, elevated splashy treble above 4kHz, crossover directivity error, and sharply narrowing tweeter dispersion. Distortion becomes extreme below 50Hz. Its raw 2.71 preference score is weak without a subwoofer, so EQ and careful toe-in are strongly recommended.
What the Onkyo GX-30ARC offers: A compact powered pair with unusually complete connectivity: HDMI ARC, USB-C, optical, phono/line, aux and Bluetooth 5.3. Erin’s data predicts a 5.55 score with a subwoofer, low 0.091 on-axis roughness and useful 62Hz in-room extension. Watch for: The response rises about +0.48dB per octave and narrows vertically, while directivity-index consistency is a mediocre 3.84. Its 0.232 sound-power smoothness suggests some room-response unevenness, and low bass still benefits from a subwoofer.
Buy the KRK Classic 5. It ranks higher for sound quality than the Onkyo GX-30ARC and costs less, so there is no real case for the other one.
Specifications Side By Side
| KRK Classic 5 | Onkyo GX-30ARC | |
|---|---|---|
| Price | $280 | $349/pair |
| Ranked | #30 of 64 in Medium Size Powered Bookshelf Speakers | #43 of 64 in Medium Size Powered Bookshelf Speakers |
| Bass Extension (-3dB) | 60.1Hz (Spinorama/Audio Science Review) | - |
| Bass Extension (-6dB) | 54.2Hz (Spinorama/Audio Science Review) | - |
| Spinorama Preference Score | 2.71 without subwoofer; 5.22 with subwoofer | - |
| Dimensions | 9.7"H x 7.4"W x 11.2"D (246.4 x 188 x 284.5 mm) | approx. 8.7H x 5.8W x 7.9D in each |
| Frequency Response | 56Hz-30KHz (+-3dB) (Manufacturer specified) | - |
| Inputs | RCA, TRS, XLR | HDMI ARC, USB-C, optical, phono/line, 3.5mm aux, Bluetooth 5.3 |
| Weight | 12.9 lbs / 5.87 kg | - |
| Drivers | 5" (127mm) woofer | 1" tweeter, 4" woofer |
| App | No | - |
| Bluetooth | No | - |
| EQ | Yes (Room adjustment) | - |
| Output Power | 50w RMS Per Speaker | - |
| Enclosure | - | 2-way powered, rear-ported |
| Power Output | - | Class D amplification |
| Outputs | - | Subwoofer |
| Country | - | Japan (design) |
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- Vanatoo Transparent Zero Plus vs Edifier MR4
- Edifier MR4 vs Edifier S1000MKII
- Edifier MR4 vs NHT Pro M-00
- KRK Classic 5 vs Kali LP-UNF
- Kali Audio IN-5 vs KRK Classic 5
Prices on this page were last checked August 25, 2026 at 6:19 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
KRK Classic 5: $280 Amazon eBay
Pros: High-quality Klippel NFS data produces a 5.22 Spinorama preference score with a subwoofer, essentially level with the Edifier MR4. Bass reaches 60.1Hz at -3dB and 54.2Hz at -6dB, and the speaker responds especially well to EQ: Spinorama’s corrected score rises from 2.71 to 5.34 without a subwoofer and from 5.22 to 7.71 with one.
Cons: The unequalized response has a large 6.5dB frequency-deviation band, elevated splashy treble above 4kHz, crossover directivity error, and sharply narrowing tweeter dispersion. Distortion becomes extreme below 50Hz. Its raw 2.71 preference score is weak without a subwoofer, so EQ and careful toe-in are strongly recommended.
Full KRK Classic 5 review and specifications →
| App | No |
|---|---|
| Bass Extension (-3dB) | 60.1Hz (Spinorama/Audio Science Review) |
| Bass Extension (-6dB) | 54.2Hz (Spinorama/Audio Science Review) |
| Bluetooth | No |
| Dimensions | 9.7"H x 7.4"W x 11.2"D (246.4 x 188 x 284.5 mm) |
| Drivers | 5" (127mm) woofer |
| EQ | Yes (Room adjustment) |
| Frequency Response | 56Hz-30KHz (+-3dB) (Manufacturer specified) |
| Inputs | RCA, TRS, XLR |
| Output Power | 50w RMS Per Speaker |
| Spinorama Preference Score | 2.71 without subwoofer; 5.22 with subwoofer |
| Weight | 12.9 lbs / 5.87 kg |
- Links
- Reviews, Comparisons and Sound Samples
- Audio Science Review Measurements More from Audio Science Review →
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- Audio Science Review Measurements (spinorama.org)
- Reddit Search for KRK Classic 5 Review
- Head-to-Head Comparisons
- KRK Classic 5 vs Edifier MR4
- KRK Classic 5 vs Edifier S2000MKIII
- KRK Classic 5 vs Vanatoo Transparent One Encore Plus
- KRK Classic 5 vs Dayton Audio M4
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Onkyo GX-30ARC: $349/pair Onkyo eBay
Pros: A compact powered pair with unusually complete connectivity: HDMI ARC, USB-C, optical, phono/line, aux and Bluetooth 5.3. Erin’s data predicts a 5.55 score with a subwoofer, low 0.091 on-axis roughness and useful 62Hz in-room extension.
Cons: The response rises about +0.48dB per octave and narrows vertically, while directivity-index consistency is a mediocre 3.84. Its 0.232 sound-power smoothness suggests some room-response unevenness, and low bass still benefits from a subwoofer.
Full Onkyo GX-30ARC review and specifications →
| Country | Japan (design) |
|---|---|
| Dimensions | approx. 8.7H x 5.8W x 7.9D in each |
| Drivers | 1" tweeter, 4" woofer |
| Enclosure | 2-way powered, rear-ported |
| Inputs | HDMI ARC, USB-C, optical, phono/line, 3.5mm aux, Bluetooth 5.3 |
| Outputs | Subwoofer |
| Power Output | Class D amplification |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- Onkyo GX-30ARC vs Edifier R1280DB
- Onkyo GX-30ARC vs Edifier S2000MKIII
- Onkyo GX-30ARC vs KEF LSX II LT
- Onkyo GX-30ARC vs IK Multimedia iLoud MTM MKII
- Onkyo GX-30ARC vs Kali Audio IN-5
- Onkyo GX-30ARC vs Yamaha HS5
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- See all 10 comparisons