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Blaupunkt EMA 255

2-channel car amplifier — 55 watts RMS x 2

Item #: 023EMA255

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6 Reviews | Ask Questions


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Blaupunkt power for your speakers

Blaupunkt's EMA 255 2-channel amplifier will power a pair of your car speakers with 55 watts RMS each — plenty enough to give you the extra clarity and impact you want for your music. A selectable high-pass filter lets you clean up the sound even more, by removing the extreme low rumble from your full-range speakers — very handy if you're using a subwoofer.

Bridged to mono mode, the EMA 255 can drive a subwoofer with up to 165 watts. A variable low-pass filter gives you extra control over your sub, and a bass boost lets you bump up your punch a couple of notches when you need it.

A heavy aluminum heatsink helps keep this compact amp running cool and reliably. Speaker-level inputs let you connect it to a factory radio with no RCA outputs, so you won't need a line output converter or other device in order to play music.

Blaupunkt EMA 255

EMA 255 input and control panel

Product Highlights:

  • 2-channel car amplifier
  • 55 watts RMS x 2 at 4 ohms (80 watts RMS x 2 at 2 ohms)
  • 165 watts RMS x 1 in bridged mode (4-ohm stable in bridged mode)
  • Class AB amp technology
  • selectable high-pass filter (80 Hz, 12 dB/octave)
  • variable low-pass filter (50-250 Hz, 12 dB per octave)
  • bass boost (0, 6, or 12 dB at 45 Hz)
  • preamp and speaker-level inputs
  • preamp outputs
  • fuse rating: 25A x 1
  • 8-gauge power and ground leads recommended — wiring and hardware not included with amplifier
  • 7-1/4"W x 2-1/16"H x 7-1/4"D
  • warranty: 1 year
  • Our 60-day money-back guarantee

My system has plenty of power. Who needs an amp?

You might think you don't need an amp because you have a 400-watt system in your car, or because your new stereo puts out 50 watts a channel. But those are peak wattage ratings, which may boil down to 15 or 20 watts per channel, using the more realistic RMS rating. An amp sends your speakers the power they need to deliver your music with clarity and impact, whether you're using factory speakers or high-performance components. And low-frequency reproduction requires lots of power, so an amp is an absolute must if you're adding a sub to your system.

Blaupunkt EMA 255 Reviews

Average Customer Review:

6 Reviews

Blaupunkt EMA 255

Written by: Mark E. from Little Rock, Arkansas on September 22, 2015

Crutchfield Customer Review (What's this?)

Works as advertised. Easy to install with clear instructions and well marked connections.

Pros: Good power for low price.

Cons: None so far.

Works well!

Written by: MichaelE from Clarks Summit, PA on August 11, 2015

Crutchfield Customer Review (What's this?)

I purchased this to replace an old 2x30 watt Blaupunkt that was about 20 years old. I see the same quality in this amp as was in the old one. It seems very well assembled and solid. It didn't take long to install it where the old amp was. The power connectors were different, but considering the higher output, that was expected. Adjustments only took a few minutes and I was good-to-go! I would recommend this amplifier.

Pros: Easy to connect, easy to set-up, super easy to listen to.

Cons: A setting for the High-Pass filter would be nice.

Blaupunkt EMA 255

Written by: ChrisM from Maryland on July 4, 2015

Crutchfield Customer Review (What's this?)

Upgraded sound system in my 1993 325i with Blaupunkt equipment ( Headunit, subswoofer, & 2 amps). Sound is fantastic!

Pros: Easy setup and great value.


Blaupunkt EMA 255

Written by: Ray H. from Dillsboro, IN on November 4, 2014

Crutchfield Customer Review (What's this?)

Very nice small amp. Gets a little hot but has not shut down on me. Running a 8 inch sub.

Pros: Small, easy to install

Cons: feels a little warm under load.But no trouble

I always liked the sound from blaupunkt.

Written by: idpa45 from thornhurst on October 12, 2014

Crutchfield Customer Review (What's this?)

I always had blaupunkt products, and the way they sound is excellent......

Pros: VERY GOOD SOUND.......

Cons: Buy the amp install kit. Besides that no cons.....

Blaupunkt Amp

Written by: Vetbird from Florida on August 20, 2014

Crutchfield Customer Review (What's this?)

So far it works great. Easy to connect with powerful good distortion free sound. I'm using it in a boat so time will tell if it holds up under those tough conditions.



Hands-on research

What's in the box?

Download owner's manual

  • Two channel amplifier
  • One 11" Speaker level input harness
  • Two 20-amp ATO fuses (1 installed/ 1 spare)
  • Four 3/4" Self-tapping screws
  • Owner's manual (English/ German/ French/ Spanish/ 18 other languages)

Product Research



Level Control: rotary gain control; continuously variable from 200 mV to 10 V


  • Mode: Low Pass, Flat (crossover is bypassed), High Pass (fixed at 80 Hz)
  • Low Pass Frequency: continuously variable from 50 to 250 Hz

Bass Boost: three position switch; 0, +6 dB, +12 dB; centered at 45 Hz


Power/Ground: screw terminals; 0.5" wide, 10 gauge wire recommended

Remote Turn-on: screw terminal; 0.325" wide

Speaker Terminals: two pair of screw terminals; 0.325" wide

Line Level Input: one pair of stereo RCA jacks

Speaker Level Input: one port for the included speaker level input harness

Line Level Output: one pair of stereo RCA jacks

Fuses: one 20-amp ATO fuse

Our Product Research Team

At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team. They verify what’s in the box, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.

Customer Q&A