Micca RB42 Specifications and Review

Last updated: September 8, 2026

The Micca RB42 ranks #72 out of 87 total Medium Size Bookshelf Speakers for sound quality. See Top Recommended Speakers By Attribute for all the top speaker suggestions.

Brand: Micca

Prices on this page were last checked September 8, 2026 at 6:02 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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Micca RB42 - ranked #72 of 87 Medium Size Bookshelf Speakers · Editor's rating 2.3/5
Check price at Amazon ($159.99) →

#72 Micca RB42: $159.99 Amazon eBay

Pros: Curved cabinet fit and finish look closer to a $400-500 speaker than a $150 one. Rated for a wide 15-100W amplifier range with 4-8 ohm compatibility, giving flexibility with modest amplification.

Cons: CEA2034 spinorama shows significant peaks and valleys in the on-axis and listening-window response starting a few kHz up, with excess high-frequency energy the reviewer found fatiguing over time despite an initial impression of “detail.” Off-axis response diverges heavily from on-axis, meaning tonality shifts with room and listening position in ways EQ can’t correct. Distorts and the woofer visibly flaps under moderate volume; low 83dB sensitivity makes it a harder amplifier load than its size suggests.

How it compares: Just above it: Zaph Audio ZA5.2 TM - $223 more, 2Hz higher bass extension (-3dB). Just below it: Q Acoustics 5020 - $1039 more, 7.1Hz higher bass extension (-3dB).

Bass Extension (-10dB)62Hz (measured, Audio Science Review) - the reviewer noted an artificial boost around 100-300Hz, so true extension may be worse than this on-axis reading suggests
Bass Extension (-3dB)85Hz (measured, Audio Science Review) - the reviewer noted an artificial boost around 100-300Hz, so true extension may be worse than this on-axis reading suggests
Dimensions8.7H x 4.9W x 7.9D in
Drivers4" coated paper woofer, 0.75" silk dome tweeter
Frequency Response50Hz - 20kHz (Manufacturer specified, typical in-room)
Impedance4-8 ohms
Power Handling15-100W each
Sensitivity80dB (2.83V/1m, measured, Audio Science Review)
Weight6 lbs / 2.7 kg each (per retailer listing)
Woofer Cabinetported, front
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