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Press the Red Button/Box in the right corner -
Ask about SERVICE/RENOVATION for your ONIX AUDIO OA21 units

We have to end this service in 2025 so be quick 
Ending soon  - 195  euros - 170  GBP  including  return carriage  

We are proud to have 100% success of renovation of all older units 
With 100% satisfaction and 100%  return rate  

We designed them 35 years ago , and we renovate them now- good for another 35 yrs 
For restoration,  to perfection & back to each customer 

Onix Audio Soap and OA21 www.oa21.com

 ONIX AUDIO & OA21  - Q & A Classic SERVICE
use the Ai
Redbox to the right to ask anything

It impossible to do the job properly for less than we charge , sadly some owners think you can and we have to keep picking up the pieces of bad work, that has ruined our great  products , so the time has come to close our 25+ service in late 2025

We renovate all of our units we don't just repair them - They are 40 years old they need it 

 

Customers love of our older units, rightly so,  we do too  - so we offered our renovation service for ONIX AUDIO 

Cherished products we made in the 80s & 90s  ( Classic is over 25 years old)  for years .

Keeping them musically and functionally perfect WITH ORIGINAL ONIX AUDIO NEW PARTS 

We compare the finished renovation with sound to the original ONIX AUDIO amps . No one else has the ability do this

​​​​Fact is you get what you pay for in electronics,  less money mean less - Simple  ?  OA21 Amps are 40 years old 

They ALL need more than just a "Fix " our renovation takes 5  to  7 hrs - there is a reason why !

 its a 100% certain something else will shortly follow, after you "FIX IT "  its 30+  years old , 

when you take them apart to repair  them how often does something break or fail to undo ?  Get the point ?

We know how to take it apart, and in what order ,  and we know how to renovate all the case parts ( See the Video Above ) 

We know the knobs are often glued on after having fallen off, or repaired by others . The grubb screw strips the thread 

We have a stock of parts others cant get or buy , and we make the parts you might need that others don't have - EVER.

We have never released the circuit diagrams or build list NO ONE ELSE HAS THESE 

We made 1000s of Onix Audio Units, OA21 / OA20 / OA22  Etc yours was one of them

We renovate and restore , we re-make your amp  . NO ONE ELSE CAN or does DO THIS

We hear " TV Repair " people say ... Parts don't matter ,  they are all the same !!

If you are ever told by a repair bod that parts don't matter in electronics   .. NEVER USE THAT PERSON

They say  all amps are the same, so what difference do parts make ?

All amps are the same ? !  All cars are the same !  All houses are the same !  All Repairs are the same !

All sickness is the same , all buildings are the same ! all people are the same !!  ..YOU GET THE PICTURE

Run from the guys that think like this ?

 

 

 

 

 

Parts are cheap for a reason - See above

OA21 Ltd T&Cs  - Click Here

Identical Transistors ...Everything is not equal www.oa21.com

35 Years old and this is after our renovation service in 2025

ONIX OA21 Renovation done in 2025 from 1984

© OA21 Ltd  20-22 Wenlock Road London N1 7GU England © 2025

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