EBS Reidmar 250 D Class Head & EBS Classic Line
CL112 Cabinets -
Swedish bass amp maker EBS has finally unveiled its first Class
D head - the pint-sized but potent Reidmar mini stack. Was it worth
the wait? Dan Veal donned his Viking helmet and prepared to do
Swedish bass amplification and effects master EBS has already
established itself in the bass gear market with a long list of
credible bassists as endorsing artists. However, it has taken until
now for EBS to take its first foray in to the 'D Class
Why? Well, the design specification of the Reidmar, (whose name
interestingly is that of a dwarf in Nordic mythology) was to bring
out a D Class amplifier to compete in the market, not to be the
lightest or the most powerful on paper, but to actually deliver the
same power and girth as the other amplifiers in the EBS range.
Owing to the space and weight savings of D Class technology, it
would mean that the amplifier could shave off pounds and inches,
making a more compact and portable unit.
Setting up in the studio was a total breeze. We rapidly had
everything hooked up and ready to go with my usual six string
Shuker custom bass plugged in. The Reidmar's pristine sounding
preamp is all analogue with no DSP sections. The front panel is
tidy and very easy to operate including a 'mid scoop' pre-shape
control and by-passable four band EQ. A simple, but musical,
EBS compressor with just a single control is on board to control
transients or just to make your bass sound lovely and squishy at
more extreme settings! The four band EQ is a nod to the controls on
Reidmar's siblings, featuring bass, semi-parametric mids, treble
and bright controls. It's musical and great sounding, with just the
right EQ frequency centres for most instruments. The mid control
has a frequency knob that can be swept from down in the bass range
at 100Hz all the way up to 6kHz, meeting the point at which the
treble control takes over. The bright control allows you to add
some real sheen and air to your bass sound, making new strings
sound extra zingy!
I really liked disabling the EQ altogether in favour of using
just the pre-shape function instead. Much like the Session 60 combo
I reviewed in an earlier edition of Guitar Interactive, as I think
that the frequency curve for the pre-shape for each of these models
is actually spot-on! In my previous review I mentioned how I
thought it made the combo sound much bigger than it actually was.
No surprises to hear that the same effect was noticed with this
mini stack too!
The Reidmar isn't about growly tube tone, nor does it pretend to
be a hot rod bass monster, but what it does do is reproduce your
bass tone faithfully with lots of power. I felt that playing
through the stack with my normal bass, my notes were controlled
without flappy subs or incoherence. Some would call this a 'tight'
and 'clean' sound. I'd agree.
Round the back of the amplifier, the 'clean and tidy' theme
continues, with an effects loop and D.I. output (with pre/post EQ
switch and ground lift) and also a Line Out and Headphones socket.
There is, unusually, only one Speakon output socket and it is not a
'jack combination' type either. So, if you have a pair of cabinets,
you will need to connect the amp to one cabinet, then, in the case
of the EBS CL112, daisy-chain a Speakon lead from the link
(parallel) socket on the same cabinet out to the next cabinet. This
will set you up with a 4 Ohm load to match with the Reidmar's
minimum load to give you maximum output wattage.
The amplifier features no limiting and to that end you are
afforded as much of the power amplifier's output as possible before
it clips. EBS says that when the amplifier does finally push into
clipping, it does it in a musical way. I have to say though, when
we cranked the levels, the cabinets gave in to the crazy volume
levels before the amplifier showed any signs of breaking a sweat!
It's pretty loud for a standard 12" speaker pair I have to say!
EBS quotes this amplifier as having a 250W RMS output stage with
a 'dynamic output' at four Ohms of 470W. In EBS marketing videos,
the heads are said to be comparable to the output power of
competitors' 500W rated heads. We were unable to test these
We loved this wonderfully compact rig in the studio. The head
sits comfortably and substantially upon the pair of EBS CL112
cabinets featuring a single EBS 12" bass speaker and 2" tweeter. We
left both tweeters switched on in the review, preferring to use the
EQ controls to adjust the tone and top end. To be honest though,
the sound was incredibly well balanced and even with my reasonably
bright bass, I chose to leave the EQ mostly flat, but boosted the
low end a bit to add depth to the sound.
Each of the CL112 cabinets has a rating of 250W at 8 Ohms,
paired together giving you a 500W mini stack at 4 Ohms. This is a
perfect configuration for the Reidmar as a small modular rig - but
make no mistake, the Reidmar would be very happy powering EBS's
much larger cabinets comfortably.
Interestingly, despite EBS not wishing to compete in the race
for the lightest amplifier, the Reidmar still weighs in at a tiny
3.2Kg! It's really not going to be a problem popping it in a bag
and throwing over your shoulder with the bass hanging off
your other shoulder! Some of the other small high power D Class
heads will slip in to a front pocket of a bass soft case, however
you may prefer the added protection of a dedicated amp case/bag for
the Reidmar as it is a little larger than some rivals.
The construction of the head and the cabinets is absolutely
flawless - no marks or ill-fitting cabinet covering - and these
units were packed well and inside their sealed factory bags so
clearly hadn't been selected specially for this review. Tick in the
I think the rig will suit a wide range of players, mostly those
not needing to fight Mr 5150 with his stonking 4x12! The Reidmar
rig is loud, but probably not ideal for ear-splitting gigs. It's a
great versatile piece of kit that rewards you with an honest and
faithful reproduction of what you put into it. And when you really
do need more volume? The Reidmar head could happily sit on larger
EBS cabinets when the time comes to 'see off' your fellow
guitarist's rig - and at a fraction of the weight!
Check out the full review inc. video of the EBS Reidmar 250 D
Class Head & EBS Classic Line CL112 Cabinets by Dan Veall
in Issue 13 of Guitar Interactive (
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