|Right from the start this amp was going to be awesome.
Many guitarists will never have heard of the guy called
Dumble. But most will have one way or another heard the
sound this amp and it's derivatives makes - from the radio,
record and cd or plain everyday lifestyle. Many musicians
seek exactly this tone.
The Overtone HRM is based originally on a Fender design and
this design was modified/begged/borrowed and mutilated in to
a world class amp by one 'Mr Dumble'. The only problem? Well firstly find
'Mr Dumble' and then convince him (yes you read that
correctly) to make an amp for you - that is - after you have
sent him your music AND only if he likes what you do will he
proceed - so legend goes. The next problem.. you need lots of money - the man
did/does not make cheap amps. Lastly - just don't ask when the
amp will be ready - or you just might never get it. Some
people can be picky that way. It is claimed there are only
around 200 original amps or so in existence.
Since those heady days starting in the 60's and ending
(so they say) in the mid 90's things have changed. If you
want to buy one of those old Dumble amps be prepared to pay
upwards of $50,000 today and there's no guarantee that the
amp you buy will sound right for you. You could 'tweak' it
up a little - that is, AFTER you decipher what Mr Dumble
used for parts (they are well hidden under a pile of gooey
mess designed to
stop you looking) and then of course the value of your
prized possession has just taken a tumble (no not dumble) so
I guess it's not a good idea after all.
Now here's 2010 and onwards. Things have changed again.
Mr Dumble (it is alleged) no longer makes his amps and now
makes guns (really - so be careful) it's going to be hard to buy an
original - even if you did rob the bank. Now there are a
number of companies that have successfully made a 'Dumble'
clone (to varying levels). Remember the originals were all
different and custom made by probably one of the worlds best
amp guys - so the clone's cannot all be all on the nail.
But one product stands out for me (and it's design is
arguably the closest you can get to one of those originals)
- and guess what - it only costs a fraction of the original.
There's time marching on. But an advantage is that you can
'tweak' your Overtone HRM until it's right for you - and you
will not probably lose any money! What a fantastic move
Of course, this type of product will remain in the folk
lore of the musicians world for a long time and there is no
doubt that the guy you never heard of (Mr Dumble) will
become even more legendary because now everyone is talking
about him in a nice way and his tube amplifier works remain
some of the finest the world has ever seen.
You can buy the Overtone HRM from a company called
'Ceriatone' who reside in Malaysia either as a kit or ready
made from them. This website shows how you buy a kit, how
you build it, how you test it but it does not tell you how
to play it - I guess if you have made it this far then
you probably know how to do that already!
There are many musicians who use Mr Dumble's amps even
today, and of course there are many more that use various
'clone' amplifiers (amps) from various makers - but by
finding this site you have probably found the best 'Dumble'
clone in the world in my opinion.
On this site are audio samples, photos, documents and most importantly a video
representation of exactly what I did to build and test
the overtone HRM from Ceriatone. My version was based on 240
volts so if you follow what I did please remember that
mine may well be different than yours. Mine is bigger....
The Complete Video as shown on this site is available to buy
in the form of a DVD. Just email me from the contact page
HERE and I'll get back to you with how you pay. For the UK,
shipping is £2.00 but anywhere else will cost more....
One last thing....
SAFETY WARNING: If you visit this site I accept
absolutely no liability whatsoever if you
either buy a kit or an amp of any kind and subsequently kill
yourself. There are lethal voltages in all tube (valve) amp
circuits. If you do not know what you are doing then don't
do it! Failure to heed my warnings could be the end of the
amp, or you, or both! After all - you will not be coming
this way again soon if you get things wrong. Check out more
safety information before the build pages but as I said - I
take absolutely no responsibility for your safety and I
advise you not to proceed if you are not trained in
electronics and how to handle high voltages without getting
If you don't understand something - then get someone
involved who truly does.
Please enjoy this site, but remember that all content
that I have developed remains copyright A B Mckenzie 2009.
Why not visit one of my other websites
and find out more about me.