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Audioengine P4 Passive Bookshelf Speakers

1 Review
The Audioengine P4 (AP4) is a high-performance bookshelf speaker pair with the same great looks and sound as our powered speakers. Experience the signature Audioengine sound and quality but without our built-in amplifiers. Beautiful, small, and affordable, AP4 is the perfect choice for your living room, bedroom or office and an ideal surround speaker for use with other Audioengine speakers in your home theater or stereo system.

Why passive speakers?

The AP4 passive speakers are full-sounding bookshelf speakers in a satellite-sized package. The goal with AP4 was to design a small but powerful bookshelf speaker for people that already have surround receivers or amplifiers and are looking for the same Audioengine sound and quality in a passive loudspeaker.

Already have an amplifier

If you already have an power amp or don't want to give up that big surround receiver then the AP4 is for you. The AP4 has excellent bass response for its size, which is evident when used either as stereo speakers or as satellite surround speakers in your home theater setup. AP4 sounds great sitting on stands, on a bookshelf, or mounted on a wall using the integrated threaded inserts which are compatible with most wall or ceiling mount bracket systems.

Part of the Family

Audioengine active and passive speaker models share a similar "voicing" and overall tuning so that you are assured a matched system no matter which of our speakers or Audioengine wireless adapters you decide to add to your system.


The AP4 passive speakers are perfect for digital hybrid amplifiers (Class-D, Class-T, etc.) as well as most stereo receivers, integrated amps, and tube amplifiers. The AP4 has a 4 ohm impedance rating but will sound great when connected to almost any receiver or power amp with 4, 6 or 8 ohm speaker output impedance.

Hear the Difference

The Audioengine P4 sets a new level of quality and easy setup. Mount a pair on a wall or stand as surround speakers in a home theater system or place them on a shelf or table for a compact stereo setup. Even if you're not an audio enthusiast we guarantee you will still hear a difference!

A/V Revolution Review

There's a lot to like about the AP4s. These mighty mites excel at reproducing voices and instruments in space. Bright highs and uncluttered midrange are two of the speaker's greatest strengths.

Digital Home Thoughts Review

These passive speakers are capable of producing big sound without taking up much space. After a couple of hours with the AP4's, I switched my system back to my Wharfdale EVO2's and honestly felt the little AP4's met the performance of the larger, free standing Wharfdales.
  • 4" 2-way passive, front ported design
  • Hand-built and custom finished cabinets
  • 5-way gold-plated binding posts
  • Silk dome tweeters and Kevlar woofers
  • Magnetically-shielded
  • Technical:
  • Type:2-way passive, front ported design
  • Sensitivity:88dB (2.83v@1m)
  • Frequency response:58Hz-22kHz
  • Nominal Impedance:4-8 Ohms
  • Crossover Frequency:2.8 kHz
  • Recommended Amplifier Power:10-125W per channel
  • Tweeter:3/4" (20mm) silk dome with neodymium magnets
  • Woofer:4" (101mm) Kevlar cone
  • Enclosure:3/4" MDF
  • Inputs:Gold-plated, 5-way binding posts
  • Weight (each):2.75 kg (6 lbs)
  • Total shipping weight:6.5 kg (14 lbs)
  • Dimensions (each):228 (H) x 140 (W) x 165 mm (D) (9 x 5.5 x 6.5")
  • Shipping box dims:330 (H) x 460 (W) x 228 mm (D) (13 x 18 x 9")
  • Included Accessories:
  • (2) AP4 Passive Speakers
  • (2) Drawstring Cloth Speaker Bags
  • (2) High-density foam isolation pads (attached)
  • Setup Guide
  • Ratings & Reviews

    1 review

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    I'll admit that a large part of why I originally purchased my P4s, aside from the reviews, was they fit the rather small size specs I needed. That said, these are very impressive speakers for the size and price - I use them for my vinyl, tape and digital music and they really bring out every detail in the mid to high range. Build quality and finish are very solid, though make sure to give them time to break in before judging the output. If you're looking for deep low end you'll need a add a sub, but they handle bass well for their size. After a year of regular use I'd happily re-buy them over anything else in the price range.