THX Monoblock


Active Member
Does anyone know anything about the Marantz MA6100 monoblock power amp? The specs are;

Mono power amp with D-Bus
THX Ultra certified
125W power output RMS
Current converstion noise -
Eliminator * Remote operation
Video sensor signal
Colour - Black

For £180 this does not seem bad, unless it is a scrappy bag of knackers!


I know of some marantz blocks, though i think they are a different model. To my recollection they were reviewed reasonably well, but that was with the proviso that theywere for thx cinema type use and not for music......



Active Member
Here are the full Marantz specs;

THX Ultra certified; designed and engineered to the very highest standards for the finest surround sound experience
Ultra-narrow monaural amplifier, just 85mm wide, permits compact side-by-side arrangement for neat space-saving set-up in smaller living rooms
High power output delivers a huge 125W (RMS into 8ohms), rising to a powerful 180W into demanding 4ohm loudspeakers
Current Conversion Noise Eliminator (CCNE) eliminates rectifier noise and preserves high frequency fidelity

Number of inputs : 1
Gold cinch : all
Speaker terminals : 1 x screw type

RMS power into 8/4 ohms : 125 W/ 180W
DIN power into 8/4 ohms : n/a
IHF dynamic power into 8/4 ohms : n/a
Total Harmonic Distortion : 0.02 %
Damping factor : 60
Signal-to-noise CD/Phono (MM/MC) : 110 dB/ n.a.
Frequency range : 10-70k Hz
Channel separation (1kHz/10kHz) : n/a

power-switched by trigger, BTL possibility, invert output

Cabinet dimensions (W x H x D) : 88 x 146 x 470 mm
Weight : 5.7kg

Any views?

Paul Smith

Well-known Member
I believe the Marantz MA6100 monoblocs are just re-styled MA500 's, this is to bring them in line with Marantz's current range of styling.
The MA500 monoblocs were a long running well regarded design and I should think that the MA6100 will be very similar.
(just do a search on MA500 and you should find a few reviews).
I hope this helps,

(a previous MA500 owner)


Active Member
Thanks, I was thinking of picking about 7 of these rather than opting for a single multi-channel power amp, as the price seems quite reasonable.

General Skanky

Well-known Member
The original blocks were reviewed in a HCC supplement a year or two ago. They came out ok. At £180 a go I'd be interested for sure.

But think of it like this, 1 x Rotel 1075 amp = £800, I think, or 5 x Marantz = £900. I'd go Rotel unless you're adding as and when budget allows.


Active Member


Active Member
I looked at the Rotel and the limited number of channels is disapointing. A dealer told me that Rotel had a new model in the pipeline, but I have not seen anything about it yet. I think I will go for the monoblocks as the price is quite tempting and upgrading to 10.1 should not be a problem (except the paying for it bit!!!).


Well-known Member
Where have you seen them for £180.

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