Short answer: the Genelec 8331A for better sound quality, the IK Multimedia iLoud MTM MKII for the lower price. The Genelec 8331A ranks #1 of 100 powered bookshelf speakers, rated 4.8/5, at $5,750. The IK Multimedia iLoud MTM MKII ranks #22, rated 4.2/5, at $699.99, $5,050.01 cheaper.
Why pick the IK Multimedia iLoud MTM MKII: Erin’s MKII measurements give a 2.2dB midrange span, a -3dB point around 53Hz, and preference scores of 5.22 standalone and 7.44 with an ideal subwoofer. Watch for: Some excess treble remains in the native tuning.
The Genelec 8331A is the more accurate choice. Erin’s Klippel measurements support its reference-monitor credentials: a 1.4dB response span from 300Hz to 5kHz, low listening-window and predicted-room irregularity, and preference scores of 6.57 standalone and 8.51 with an ideal subwoofer. Its measured preference score, a predictor of how neutral it sounds, is 6.57 against 5.22 for the IK Multimedia iLoud MTM MKII. The catch: Expensive, with studio-oriented XLR connectivity rather than consumer streaming.
Buy the IK Multimedia iLoud MTM MKII if the price is the priority over sound quality, or the Genelec 8331A if sound quality is the priority over the price.
Looking for alternatives? See the complete Powered Home rankings.
Specifications Side By Side
| IK Multimedia iLoud MTM MKII | Genelec 8331A | |
|---|---|---|
| Price | $699.99 per pair | $5,750 per pair |
| Ranked | #22 of 100 in Medium Size Powered Bookshelf Speakers | #1 of 100 in Medium Size Powered Bookshelf Speakers |
| Dimensions | 10.4”H x 5.1”W x 6.3”D (264.2 x 129.5 x 160 mm) | 12”H x 7.4”W x 8.3”D (305 x 189 x 212 mm) |
| Frequency Response | 48 Hz - 28 kHz (±2dB) (Manufacturer specified) | 45Hz - 37kHz (-6dB) (Manufacturer specified) |
| Bass Extension (-3dB) | 52.7Hz (measured, Erin’s Audio Corner) | 49Hz (measured, Erin’s Audio Corner) |
| Bass Extension (-10dB) | 46.3Hz (measured, Erin’s Audio Corner) | 39Hz (measured, Erin’s Audio Corner) |
| Inputs | XLR | XLR, AES/EBU |
| Drivers | 2x 3.5” (89mm) woofers, 1” silk dome tweeter | Dual 130x65mm woofers; 90mm coaxial mid; 19mm tweeter |
| App | Yes (X-MONITOR speaker emulation) | - |
| Bluetooth | No | No |
| EQ | Yes (Room adjustment) | - |
| Amplifier Power | 100w Per Speaker | 72W LF + 36W MF + 36W HF |
| Weight | 5.5 lbs (2.5 kg) each | 14.8 lbs (6.7kg) each |
| Maximum SPL | 112.5dB peak (manufacturer specified) | 100dB at 3m before protection (measured, Erin’s Audio Corner) |
| Spinorama Preference Score | 5.22 | 6.57 |
| Spinorama Preference Score with Perfect Sub | 7.44 | 8.51 |
| XLR Input | Yes | Yes |
| RCA Input | No | No |
| TRS Input | No | No |
| Optical Input | No | No |
| Coaxial Input | No | No |
| USB Input | No | No |
| HDMI Input | No | No |
| AES Input | No | Yes |
| Aux Input | No | No |
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Prices on this page were last checked October 7, 2026 at 9:25 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
IK Multimedia iLoud MTM MKII: $699.99 per pair Amazon eBay
Older model: the IK Multimedia iLoud MTM (ranked lower, rated 4.1/5).
Same family: the IK Multimedia iLoud Micro Monitor Pro (smaller bookshelf, estimated 4.3/5).
Pros: Erin’s MKII measurements give a 2.2dB midrange span, a -3dB point around 53Hz, and preference scores of 5.22 standalone and 7.44 with an ideal subwoofer. The compact layout and included calibration microphone suit a close desktop setup. Existing tests show useful room-peak correction and good harmonic-distortion behavior at moderate levels. Measured bass extension of 52.7Hz (-3dB).
Cons: Some excess treble remains in the native tuning. The two-woofer MTM arrangement narrows the vertical listening window, so ear height and orientation matter. Multitone distortion rises strongly when pushed toward 96dB/1m; the review favors moderate listening levels, and a subwoofer does not eliminate all midrange output limits. These are MKII results, not measurements of the original MTM. Treble runs about 3dB hot on-axis; the rear -3dB treble switch overcorrects, and about -1.5dB of external EQ works better.
Full IK Multimedia iLoud MTM MKII review and specifications →
| AES Input | No |
|---|---|
| Amplifier Power | 100w Per Speaker |
| App | Yes (X-MONITOR speaker emulation) |
| Aux Input | No |
| Bass Extension (-10dB) | 46.3Hz (measured, Erin’s Audio Corner) |
| Bass Extension (-3dB) | 52.7Hz (measured, Erin’s Audio Corner) |
| Bluetooth | No |
| Coaxial Input | No |
| Dimensions | 10.4”H x 5.1”W x 6.3”D (264.2 x 129.5 x 160 mm) |
| Drivers | 2x 3.5” (89mm) woofers, 1” silk dome tweeter |
| EQ | Yes (Room adjustment) |
| Frequency Response | 48 Hz - 28 kHz (±2dB) (Manufacturer specified) |
| HDMI Input | No |
| Inputs | XLR |
| Maximum SPL | 112.5dB peak (manufacturer specified) |
| Optical Input | No |
| RCA Input | No |
| Spinorama Preference Score | 5.22 |
| Spinorama Preference Score with Perfect Sub | 7.44 |
| TRS Input | No |
| USB Input | No |
| Weight | 5.5 lbs (2.5 kg) each |
| XLR Input | Yes |
- Links
- Reviews, Comparisons and Sound Samples
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Genelec 8331A: $5,750 per pair B&H Photo Video eBay
Same family: the Genelec 8341A (larger bookshelf, rated 4.8/5), the Genelec 8351B (larger bookshelf, rated 4.8/5), the Genelec 8361A (larger bookshelf, rated 4.8/5) and the Genelec 8381A (floorstanding, estimated 4.9/5).
Pros: Erin’s Klippel measurements support its reference-monitor credentials: a 1.4dB response span from 300Hz to 5kHz, low listening-window and predicted-room irregularity, and preference scores of 6.57 standalone and 8.51 with an ideal subwoofer. The coaxial mid/tweeter and concealed woofers maintain coherent radiation as listening position changes. Bass reaches -3dB around 48Hz, and GLM adds level, delay and room-response calibration. Measured bass extension of 49Hz (-3dB).
Cons: Expensive, with studio-oriented XLR connectivity rather than consumer streaming. The compact woofers still limit deep-bass output, and the review reports protection muting when pushed beyond its operating range. GLM calibration hardware is an additional purchase. Its excellent tonal score does not remove the need for a subwoofer or larger monitor at demanding levels.
Full Genelec 8331A review and specifications →
| AES Input | Yes |
|---|---|
| Amplifier Power | 72W LF + 36W MF + 36W HF |
| Aux Input | No |
| Bass Extension (-10dB) | 39Hz (measured, Erin’s Audio Corner) |
| Bass Extension (-3dB) | 49Hz (measured, Erin’s Audio Corner) |
| Bluetooth | No |
| Coaxial Input | No |
| Dimensions | 12”H x 7.4”W x 8.3”D (305 x 189 x 212 mm) |
| Drivers | Dual 130x65mm woofers; 90mm coaxial mid; 19mm tweeter |
| Frequency Response | 45Hz - 37kHz (-6dB) (Manufacturer specified) |
| HDMI Input | No |
| Inputs | XLR, AES/EBU |
| Maximum SPL | 100dB at 3m before protection (measured, Erin’s Audio Corner) |
| Optical Input | No |
| RCA Input | No |
| Spinorama Preference Score | 6.57 |
| Spinorama Preference Score with Perfect Sub | 8.51 |
| TRS Input | No |
| USB Input | No |
| Weight | 14.8 lbs (6.7kg) each |
| XLR Input | Yes |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons