HHB Radius, Classic, Radius 10, Radius 20, Radius 30 Brochure & Specs

Tube Processors

HHB

Radius and Classic Series

HHB Tube Processing:

A unique sonic signature

HHB’s pedigree in digital audio is well

documented, with the company playing

a key role in pioneering the acceptance

of DAT, CD-R, MD and MO as profess-

ional recording formats. So why

develop a range of outboard processors

based around a technology that’s more

than 90 years old? The answer is

simple. At HHB, we believe in applying

the right tools for the job and, when it

comes to EQ and dynamics processing,

nothing matches the unique sonic

characteristics of the vacuum tube.

For total flexibility and impeccable

audio performance, the three HHB

Classics set new standards in tube

equalization, compression and

microphone pre amplification. And in

the home and project studio, our highly

affordable Radius Series delivers the

unique sonic signature normally only

associated with big studio productions.

Whether it’s adding depth and warmth

to a stereo mix, breathy presence to a

vocal track or roundness and detail to a

drum track, HHB Tube Processors

provide that extra ingredient to make

your recordings something special.

Nobody does it better

The desire for a ‘vintage’ sound is

rarely accompanied by a nostalgia for

noise. It’s a modern world, so HHB

Tube Processors combine solid state

circuitry, with its superior noise

performance and tube stages to deliver

the vintage tube sound without the

inherent noise which plagued older

tube designs. Careful research into

hybrid circuits ensures that the tubes in

HHB processors achieve their maximum

sonic effect, while noise and distortion

performance, slew rates and bandwidth

remain comparable with other

equipment in the modern recording

facility. Vintage sound. Modern

performance. HHB gives you the best of

both worlds.

Another secret to the HHB sound is the

minimal use of transformers in the

signal path, ensuring none of the

attendant frequency response roll off,

phase errors and distortion. Advanced

transistor circuitry ensures maximum

power transfer between the valve

stages and combines with high HT

voltages used to supply the tubes

(typically 250V DC in the Classics) to

deliver exceptional performance. You’ll

find no low voltage ‘wall wart’ power

supplies on HHB Tube Processors, only

fully stabilised discrete power supplies

with balanced DC heater supplies

where necessary to provide maximum

gain and headroom, and minimum

noise, hum and microphony. The tubes

themselves are military grade

specification, and all components are

of the highest possible quality,

including glass fibre double sided

circuit boards, custom steel cored

toroidal mains transformers, metal film

resistors and high-grade, long life

capacitors.

THE HHB RADIUS SERIES

4321

High performance tube processing used to be the exclusive domain of big budget

recording studios and live sound productions. Not any more. The HHB Radius

Series combines innovative British professional audio design with the finest

components and exacting manufacturing standards to create a range of tube

outboard equipment in which price is the only corner we’ve cut. The HHB Radius

Series consists of a mic pre amp, a four band stereo EQ, a compressor, a voice

processor and a mic pre amp / compressor, bringing the unique warmth and

presence of the vacuum tube to all kinds of recording, mixing, mastering and

performance projects, large and small. Signal interfacing includes balanced XLRs

and unbalanced jacks, making it easy to incorporate Radius processors into your

existing setup, and the clear, consistent layout of the controls means that you’ll be

adding the magic ingredient of an HHB Radius tube processor to your music,

straight out of the box.

KEY FEATURES

• Four channels of high quality mic pre amplification.

• Balanced XLR mic inputs, with both XLR and

unbalanced jack line outputs.

• Variable control of input and output gain allows

optimum signal level through tubes.

• Switchable 90Hz high pass filter.

• Switchable +48V phantom power for connection of

condenser microphones.

• Phase reverse switch allows instant phase correction

for each input signal.

• Drive and peak LEDs indicate the degree of tube

warming and warn of low headroom.

• Twin stage triode vacuum tubes.

• Stabilised 150V DC power supply.

Whether recording in the studio or performing live on stage, the Radius
10 will add great life to even the cheapest of dynamic microphones,
producing a more rounded, open sound which compares favourably with
the quality of expensive tube condenser microphones. With four channels
of high quality tube mic pre amplification, vocals and instruments are
instantly warmed, with the extra presence loved by artists and recording
engineers alike. Each channel features input and output level controls,
switchable +48V phantom power, phase reverse and a 90Hz high pass
filter, ensuring each signal may be quickly and easily processed, adding
the required level of rich, harmonic overtones associated with vacuum
tubes. Drive and peak LEDs indicate the operational status of these twin
stage tubes, displaying at a glance whether they are being driven at their
optimum level. This, coupled with variable input and output gain, means
that signal levels through the tubes may always be optimized.