A snapped twig in a jungle produced impulses

It is how we sense direction - so we survived

So now close your eyes

and that image is reality

Passive Model A


Power & bass

500 watts 20Hz

200mm Kevlar LF
28mm silk-dome HF

110 h, 24 w, 24 deep

Passive Model S

Slim performance

Compact realism

300 watts 25hz

160mm Kevlar LF
28mm silk-dome HF

100 h, 20 wide, 20 deep


Unique customised specs

All MonoPulse acoustic, connection, finish,
HF & LF, features can be customised to
customer request and preferences


Years of praise

Hi-Fi Choice Sept 2003. Model S - passive "Allan Hendry built loudspeakers in his teens.. Then, with a BSc, working in hi-tech electronics, he realised the significance of impulse precision. MonoPulse speakers deliver a realism that's positively electrifying." Paul Messenger.

Hi-Fi + July 2021. Model SA - active, 2 x 50W Class D. The pre amp, with remote, streams via wi-fi and Bluetooth. Set-up is fast, easy to use, and reaches new generations. With slim footprint and range of colours it will be chosen for more than its sonic performance."

International reports Media and Customers


Active versions with unmatched features

Proven high-end system specs - to 500 watts @ 20Hz
With all streaming inputs + AF & 8 ohm direct to drivers
Top DA models are full amp-per-driver audiophile spec

Active amp - SA and AA

Wi-Fi & Bluetooth streaming
With all input options & sockets
and Class D amp in master unit
Active 50 watts per channel

Bi-amp - SDA and ADA

Class D amps in both units gives
the ultimate audiophile spec of
an amp per speaker drive-unit
Total power 200 watts

Active modes

Full Wi-Fi – 24 bit master downloads
Bluetooth – 16-bit. Easy access
3.5mm w IR control – c.d., Alexa, etc
RCA – deck pre-amp, w volume control
USB - or memory-stick, socket
Full hand-held remote IR control

Inputs & controls

RCA sockets - inputs to amp
4mm l.s. sockets - link to slave
Direct to speaker 8 ohm (SA/AA)
Master power switch
Amp volume control
Mains input socket


Pre-amp aux inputs

LAN - cable or optical from router

USB socket - also for memory stick

3.5mm co-ax - with IR control



MonoPulse - Realism in 20 years of reviews

Hi-Fi NewsModel A. July 2004. "Every audiophiles dream? Allan Hendry believes that for loudspeakers to be realistic, they must be time and phase coherent. Iages lock into space, for out-of-the-box imaging and realism beyond the room boundaries." David Alcock


What Hi-FiModel S. Dec 2005. Five stars "puts emphasis on getting the phase precision between the mid/bass and the tweeter spot on. It's succeeded, so that the Ss latch on to the leading edge of every note with breathtaking confidence."


Hi-Fi +

Model S. Aug 2013. "A remarkable immediacy of a performance. MonoPulse really does bring precision, crispness and realism. So realistic, one is rarely conscious of any intrusion from the speakers themselves."

Many more pages see .. Media reactions

Custom finishes - unrivalled choices

Cloth - 8 Options


Top & Base
Oak, Walnut
Redwood, or any
metallic colour
See Options




Design and Other speakers



"Other speakers sound blurred and hazy by comparison" (What Hi-Fi)

"Realism you can almost touch"

MonoPulse - "nothing compares"

If you you don't see the need for impulse precision
stay away from dark Canadian or Norwegian forests!

So shut your eyes and listen through the speakers
- to the mixing desk, to what the producer created.

Precision becomes invisible

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