S-Class (W221) 2007-2013: S 320 CDI, S 350, S 450, S 500, S 550, S 420 CDI, S 600

Amplifier question

Thread Tools
 
Search this Thread
 
Rate Thread
 
Old Feb 19, 2020 | 07:19 AM
  #1  
funkstar's Avatar
Thread Starter
Junior Member
 
Joined: Feb 2020
Posts: 20
Likes: 3
W216
Amplifier question

Hi guys, my CL500 (which as far as I can tell is identical to the S500/S550) has the fabled Harman Kardon amplifier failure.

Having investigated the options there are no aftermarket solutions available at all due to the integration of the amplifier with the MOST system and the COMMAND unit, along with a few other reasons.

Currently the Harmon Kardon amplifier is running at $1,000 (ish) for a used and unwarranted model off ebay, versus a more reasonable $200 for the non HK (but still OEM) amplifier. Does the amplifier from the non-HK cars fit a car which had a HK amplifier?

Looking at photos and my wiring loom all the cables and sockets appear to be identical bar the lines out to the speakers (the HK system appears to have two speaker outputs, I guess to account for more speakers) - I can live with a handful of speakers not working, and can add in a higher quality non-OEM amplifier to power those speakers at a later date. However I do need an OEM amp of some form in the chain to allow the Nav, Radio and COMMAND to work, and to send a signal to any external amp I subsequently install.
  • So in short, can I install the smaller and much cheaper amp out of a S320 W221 in to a CL/S500 and get the functionality back and a number of speakers working again?

Thanks everyone.
Reply
Old Feb 19, 2020 | 08:22 AM
  #2  
konigstiger's Avatar
Out Of Control!!
 
Joined: Jul 2003
Posts: 15,901
Likes: 4,630
From: North Scottsdale, AZ
'71 Pinto
Are you searching for replacement by specific part # or simply model year/model ($1000) if the latter, provide VIN and I will pull compatible part #s to expand search. To answer your question, IMHO choose HK replacement.
Reply
Old Feb 19, 2020 | 09:24 AM
  #3  
funkstar's Avatar
Thread Starter
Junior Member
 
Joined: Feb 2020
Posts: 20
Likes: 3
W216
Originally Posted by konigstiger
Are you searching for replacement by specific part # or simply model year/model ($1000) if the latter, provide VIN and I will pull compatible part #s to expand search. To answer your question, IMHO choose HK replacement.
Thanks, I will pull out the VIN next time I'm with the car, will be interesting to see what is considered compatible.

In the mean time, if the HK was a brand new item and great quality then $1,000 would be reasonable, but it is such a poor quality item I'm investigating the alternatives. The amp from the S320 is way cheaper and could potentially provide the solution I need, i.e. a piece of hardware that can integrate with the unique way the W221 Mercedes audio system works. I can add a hi-fidelity amp in series at a later date once the system is up and running.
Reply
Old Feb 21, 2020 | 09:55 AM
  #4  
funkstar's Avatar
Thread Starter
Junior Member
 
Joined: Feb 2020
Posts: 20
Likes: 3
W216
Originally Posted by konigstiger
Are you searching for replacement by specific part # or simply model year/model ($1000) if the latter, provide VIN and I will pull compatible part #s to expand search. To answer your question, IMHO choose HK replacement.
Thanks for the offer, I sent you a PM with my VIN, but feel free to post the results in the forum. Thanks
Reply
Old Feb 21, 2020 | 11:46 AM
  #5  
konigstiger's Avatar
Out Of Control!!
 
Joined: Jul 2003
Posts: 15,901
Likes: 4,630
From: North Scottsdale, AZ
'71 Pinto
Here are compatible part #s.


Attached Files
File Type: pdf
WDD2163712A021754.pdf (122.3 KB, 315 views)
Reply
Old Feb 21, 2020 | 12:19 PM
  #6  
funkstar's Avatar
Thread Starter
Junior Member
 
Joined: Feb 2020
Posts: 20
Likes: 3
W216
Originally Posted by konigstiger
Here are compatible part #s.
Very kind of you, thank you.
Reply
Old Feb 22, 2020 | 08:31 AM
  #7  
BOTUS's Avatar
MBWorld Fanatic!
10 Year Member
Community Builder
Community Influencer
Liked
 
Joined: Aug 2014
Posts: 5,317
Likes: 1,673
S500
until you move to the end of line 221s (I'm guessing) post 2011 ,where people on ebay show a totally different design by a different manu. you can fit any small amp from 2005 to the big amp HK systems - some speakers will stop working as the HK does logic 7 (nasty surround sound) the little one has fewer speakers and does not support logic 7, but everything else will work. And all are plug and play

Sound quality wise I never thought much of the HK one and the little one is pretty much just as good, bit warm, lacks proper treble and looses it at silly volume levels (where its all about hearing damage anyway).

Post 2010 (facelift) the graphics are mildly jazzed up but its only the view the rest is the same
If you go secondhand the fan will be on its last legs - (if the amp even works), swap it out before fitting. it has the most stupidly small fan plug ever (that no one else uses), there was some on ebay years back but couldn't find on a mega through search recently

It should be noted the little amps die at the exact same rate of designed in failure as the HK ones

Last edited by BOTUS; Feb 22, 2020 at 08:38 AM.
Reply
Old Jul 2, 2020 | 07:51 AM
  #8  
DrAFPontier's Avatar
Newbie
 
Joined: Jun 2020
Posts: 3
Likes: 0
From: Dominican Republic
W219 CLS 500 2006
Hi guys,

Hope I can receive an answer.

I have a W219 - CLS500 - 2006. My AMP is damaged, however I can´t find one with this code A2118701489. The technician told me he needs one with this exact number A2118701489. But, is there any replacements for this one in particular?

Will appreciate your help.

BR
Reply
MB World Stories

The Best of Mercedes & AMG

story-0

6 Mercedes Models That Did NOT Age Well (But Are Somehow Still Cool)

 Verdad Gallardo
story-1

Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun

 Verdad Gallardo
story-2

Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren

 Verdad Gallardo
story-3

8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine

 Verdad Gallardo
story-4

Flawlessly Restored Mercedes 190E Evo II Heads to Auction

 Verdad Gallardo
story-5

Electric Mercedes C-Class Unveiled: 11 Things You Need to Know

 Verdad Gallardo
story-6

Mercedes EQS Gets A Major Update: Everything You Need to Know

 Verdad Gallardo
story-7

5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve

 Verdad Gallardo
story-8

Mercedes 300D Has Pushed Well Past 1 Million Miles and It Ain't Stopping

 Verdad Gallardo
story-9

10 Most Reliable Mercedes-Benz Models You Can Buy Used

 Verdad Gallardo
Old Jul 2, 2020 | 11:02 AM
  #9  
konigstiger's Avatar
Out Of Control!!
 
Joined: Jul 2003
Posts: 15,901
Likes: 4,630
From: North Scottsdale, AZ
'71 Pinto
VIN? I can check EPC to see if there are compatible part #s.
Reply
Old Jul 2, 2020 | 12:18 PM
  #10  
BOTUS's Avatar
MBWorld Fanatic!
10 Year Member
Community Builder
Community Influencer
Liked
 
Joined: Aug 2014
Posts: 5,317
Likes: 1,673
S500
on the small "std" amp there are loads of numbers and I think they all work, they r plug and play
Reply
Old Jul 2, 2020 | 07:22 PM
  #11  
DrAFPontier's Avatar
Newbie
 
Joined: Jun 2020
Posts: 3
Likes: 0
From: Dominican Republic
W219 CLS 500 2006
Dear konigstiger and BOTUS, thank you very much for your replies. Truly appreciated.

This morning I went to a new shop and surprising, the issue was not the AMP, but the optic fiber. They tested the audio with a smaller AMP from another MB, and after checking the fiber they noted it was a bit damaged. It was fide and audio came up. The best part, my old AMP was not damaged at all, it is in great shape. The other technician almost made me buy a new AMP.

All the best.

Reply
Old Nov 24, 2020 | 01:31 AM
  #12  
charmessence's Avatar
Member
 
Joined: Jul 2017
Posts: 145
Likes: 11
2010 S550
I have also experienced the amp in my 2010 s550 failing and wanted any recent insight on possible fixes. The part numbers on my amp are as listed"
2219000502
2218705389
2219026101

I am also not adverse to using a smaller amp, which may sacrifice a some sound quality from another benz model or aftermarket amp that is plug and play. Any advice and assistance is greatly appreciated. I am in the Raleigh, NC area if anyone knows of a good repair shop and as well am frequently in Maryland
Reply
Old Nov 24, 2020 | 05:28 AM
  #13  
funkstar's Avatar
Thread Starter
Junior Member
 
Joined: Feb 2020
Posts: 20
Likes: 3
W216
Originally Posted by charmessence
I have also experienced the amp in my 2010 s550 failing and wanted any recent insight on possible fixes. The part numbers on my amp are as listed"
2219000502
2218705389
2219026101

I am also not adverse to using a smaller amp, which may sacrifice a some sound quality from another benz model or aftermarket amp that is plug and play. Any advice and assistance is greatly appreciated. I am in the Raleigh, NC area if anyone knows of a good repair shop and as well am frequently in Maryland
I never found anyone who could reliably repair these amps and warrant their work. New ones were over $2,000 from Mercedes, and Harmon Kardon refused to either repair or replace them (irrespective of cost). The amp is more than an amp, it is a core component to the Command system; therefore you can't plug in any old amp (it isn't a standard phono cable / RCA in) , and nor can you plug in any Mercedes amp.

You will definitely need an amp from another W221. The only thing I couldn't determine was whether a smaller W221 amp would work - didn't want to be in for hundreds of dollars to find it wouldn't work. In the end I had to find a used amp that had the correct serial numbers. It is a massive massive ball ache.
Reply
Old Nov 24, 2020 | 10:09 AM
  #14  
charmessence's Avatar
Member
 
Joined: Jul 2017
Posts: 145
Likes: 11
2010 S550
Originally Posted by funkstar
I never found anyone who could reliably repair these amps and warrant their work. New ones were over $2,000 from Mercedes, and Harmon Kardon refused to either repair or replace them (irrespective of cost). The amp is more than an amp, it is a core component to the Command system; therefore you can't plug in any old amp (it isn't a standard phono cable / RCA in) , and nor can you plug in any Mercedes amp.

You will definitely need an amp from another W221. The only thing I couldn't determine was whether a smaller W221 amp would work - didn't want to be in for hundreds of dollars to find it wouldn't work. In the end I had to find a used amp that had the correct serial numbers. It is a massive massive ball ache.
thanks for the reply! Crazy thought but I located another logic 7, from Hyundai, with what seems to be have the same plugs as the w221. Not sure if it will work but may give it a try.
Reply
Old Nov 24, 2020 | 10:22 AM
  #15  
funkstar's Avatar
Thread Starter
Junior Member
 
Joined: Feb 2020
Posts: 20
Likes: 3
W216
Originally Posted by charmessence
thanks for the reply! Crazy thought but I located another logic 7, from Hyundai, with what seems to be have the same plugs as the w221. Not sure if it will work but may give it a try.
I'm afraid it won't work. It's not the hardware, its the software.
Reply

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 


You have already rated this thread Rating: Thread Rating: 0 votes,  average.


All times are GMT -4. The time now is 10:33 PM.

story-0
6 Mercedes Models That Did NOT Age Well (But Are Somehow Still Cool)

Slideshow: Not every Mercedes design becomes timeless, some feel stuck in the era they came from.

By Verdad Gallardo | 2026-05-12 18:09:07


VIEW MORE
story-1
Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun

Slideshow: Yes, Mercedes built manual cars, and some of them are far more interesting than you'd expect.

By Verdad Gallardo | 2026-05-02 12:36:58


VIEW MORE
story-2
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren

Slideshow: A one-of-one U.S.-spec Mercedes-Benz SLR McLaren Roadster became even rarer after a factory-backed transformation at McLaren's headquarters.

By Verdad Gallardo | 2026-04-29 11:19:28


VIEW MORE
story-3
8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine

Slideshow: Before curves took over, Mercedes mastered the art of the straight line, and some of those shapes still look right today.

By Verdad Gallardo | 2026-04-25 12:05:49


VIEW MORE
story-4
Flawlessly Restored Mercedes 190E Evo II Heads to Auction

Slideshow: The 190E Evolution II shows how a homologation necessity became a six-figure collector icon.

By Verdad Gallardo | 2026-04-22 17:53:47


VIEW MORE
story-5
Electric Mercedes C-Class Unveiled: 11 Things You Need to Know

Slideshow: Mercedes is turning one of its core nameplates electric, and the details show just how serious this shift is.

By Verdad Gallardo | 2026-04-21 13:58:06


VIEW MORE
story-6
Mercedes EQS Gets A Major Update: Everything You Need to Know

Slideshow: Faster charging, longer range, and a controversial steer-by-wire system define the latest evolution of Mercedes-Benz EQS.

By Verdad Gallardo | 2026-04-15 10:35:34


VIEW MORE
story-7
5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve

Slideshow: These overlooked Mercedes-Benz models never got the spotlight, but they quietly delivered more than most remember.

By Verdad Gallardo | 2026-04-13 19:35:45


VIEW MORE
story-8
Mercedes 300D Has Pushed Well Past 1 Million Miles and It Ain't Stopping

Slideshow: A well-used 1991 Mercedes-Benz 300D with more than one million miles is now looking for a new owner, and it still appears ready for more.

By Verdad Gallardo | 2026-04-10 10:05:15


VIEW MORE
story-9
10 Most Reliable Mercedes-Benz Models You Can Buy Used

Slideshow: From bulletproof sedans to surprisingly tough SUVs, these Mercedes models proved that the three-pointed star can go the distance.

By Verdad Gallardo | 2026-04-08 09:55:49


VIEW MORE