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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.

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.

HHB Tube Processing:

A unique sonic signature

Nobody does it better

#6411 Radius/Classic Brochure  14/6/99 1:07 pm  Page 3

Summary of Contents for Radius Series

Page 1: ...HHB Radius and Classic Series Tube Processors...

Page 2: ...ce 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...

Page 3: ...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 correcti...

Page 4: ...channels of compression the Radius 30 will soon become an indispensable part of your studio setup adding the finishing touch to the sound of individual instruments or compressing an entire stereo mix...

Page 5: ...0Hz 1kHz or 2 2kHz HM band 1 5kHz 2 2kHz 3 6kHz or 5kHz HF band 2 2kHz 5kHz 8kHz or 12kHz EQ may be switched before or after the compressor Stereo link for connecting two Radius 40s Stabilised 150V DC...

Page 6: ...Each compressor channel features variable input gain threshold attack release times compression ratio and gain make up for complete signal control Sidechain inserts for frequency controlled compressi...

Page 7: ...el Drive and peak LEDs indicate the degree of tube warming and warn of low headroom 250V HT voltage rail From a dynamic microphone to the most expensive studio condenser the sound of any microphone so...

Page 8: ...oise EIN 126dBu 22Hz 22kHz 150 source Max input level 10dBu Balanced XLR line I P Impedance gain range 5k 10 to 35dB Max input level 30dBu Unbalanced jack line I P Impedance gain range 5k 10 to 35dB M...

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