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The Bryston PowerPac Amplifiers are a modular monaural 

version of our very popular stereo amplifiers but designed to 

be utilized in applications where portability, sound quality 

and flexibility are of prime importance.

The PowerPac Amplifiers are a perfect choice for use as a 

portable power amplifier which can be attached directly to 

the rear of your loudspeaker. This provides for the use of very 

short speaker leads resulting in a much improved loudspeaker/

amplifier interface. The PowerPac Amplifiers can also be bolted 

on the wall for utilization in audio/video surround systems 

(left/right/center/rears/backs) where a non-conspicuous 

power module is required. A further application would be in 

multi-room audio systems where single or multiple amplifiers 

are needed to provide music in adjacent rooms. Finally, with 

the recent popularity in passively or actively amplifying the 

individual drivers in your stereo loudspeakers the Bryston 

PowerPac’s would be ideal for use in this capacity.

POWERPAC 120 SST MONAURAL AMPLIFIER

The Bryston PowerPac 120-SST amplifier, is a superior quality, 

modular, single channel power amplifier delivering 120 watts 

at 8 Ohms, or 200 watts into 4 Ohms. The PowerPac 120-SST 

is essentially a monaural version of our very popular 3B-SST 

stereo amplifier but intended for use in applications where 

portability and flexibility are of prime importance.

POWERPAC 300 SST MONAURAL AMPLIFIER

The Bryston PowerPac 300-SST amplifier, is a superior quality, 

modular, single channel power amplifier delivering 300 watts 

at 8 Ohms, or 400 watts into 4 Ohms. The PowerPac 300-SST 

is essentially a monaural version of our very popular 4B-SST 

stereo amplifier but intended for use in applications where 

portability and flexibility are of prime importance.

VERSATILE FEATURES

 Allows direct attachment or adjacent placement  

  to loudspeakers.

  On-wall mounting.

  Easy application in any multiple driver active or passive  

  stereo system.

  Balanced or unbalanced operation at the flick of a switch.

  Gold plated 5-way banana jacks, RCA and XLR  

  connectors.

  Level control adjustment.

  Detachable power cord.

POWERPAC SPECIFICATIONS

SLEWING RATE 

Greater than 60 volts per microsecond

POWER  BANDWIDTH 

 

Less than 1Hz to over 100kHz

DAMPING FACTOR 

Over 500 at 20Hz, ref. 8 ohms

IMPEDANCE 

50k unbalanced, 20k balanced

FEATURES

 

  Regulated power supplied to all voltage gain stages

  Gold plated input and  output connectors

  Switchable balanced XLR -1/4” and RCA unbalanced inputs

  Remote power turn-on. 12 v AC/DC

  Power Clipping Indicator

POWERPAC SST  

MONAURAL AMPLIFIERS

POWER PAC 60 ST MONAURAL AMPLIFIER

The Bryston PowerPac 60-ST amplifier, is a no-compromise, 

modular, single channel power amplifier delivering 60 watts at 8 

Ohms, or 100 watts into 4 Ohms. The PowerPac 60 is a modular 

monaural version of our very popular 2B-LP stereo amplifier 

but designed to be utilized in applications where portability, 

sound quality and flexibility are of prime importance.

Summary of Contents for PowerPac 120 SST

Page 1: ...BRYSTON SST PERFORMANCE DRIVEN ...

Page 2: ...itors All switches are heavily gold plated for lifetime protection from corrosion The level controls are precise 1dB increments also derived from gold plated switches and 1 metal film resistors Most important however is that the Bryston 10B Crossover uses NO integrated circuits in the signal path All internal buffer and amplification stages are Bryston s exceedingly linear and superbly quiet discr...

Page 3: ...requencies 10B standard Selectable 40 Hz 50 Hz 60 Hz 70 Hz frequencies 80 Hz 90 Hz 100 Hz 200 Hz 10B sub 250 Hz 300 Hz 400 Hz 500 Hz Slope 6 12 18 dB per Oct S N ratio 90 dB Distortion 0 005 Input 15k ohms unbalanced impediance 15k ohms balanced Output 100 ohms impediance Features Stereo 2 way Monaural 3 way Stereo 2 way summed low pass Balanced or unbalanced Independent high and low pass frequenc...

Page 4: ...e importance POWERPAC 300 SST MONAURAL AMPLIFIER The Bryston PowerPac 300 SST amplifier is a superior quality modular single channel power amplifier delivering 300 watts at 8 Ohms or 400 watts into 4 Ohms The PowerPac 300 SST is essentially a monaural version of our very popular 4B SST stereo amplifier but intended for use in applications where portability and flexibility are of prime importance V...

Page 5: ...30 5 x 4 7 x 17 9 cm wt 5 lbs 2 6 kg POWERPAC 120 SST 120 watts 8 ohms 200 watts 4 ohms 0 008 from 20Hz to 20kHz 1200 watts IM or THD 104dB below full output 1 0V in for 100 watts out 8 ohms 50k unbalanced 20k balanced 12 x 3 6 x 7 25 inches 30 5 x 9 x 18 3 cm wt 10 lbs 4 5 kg POWERPAC 300 SST 300 watts 8 ohms 400 watts 4 ohms 0 007 from 20Hz to 20kHz 300 watts IM or THD 106dB below rated output 1...

Page 6: ...o very low in capacitance Actually the XLR cable we are currently using is in fact low noise balanced microphone cable with 100 shield coverage against RF The advantage of Balanced XLR cables is that they have a noise canceling effect know as common mode noise reduction This helps prevent noise and hum from affecting your system With today s complexity of audio and video surround systems this is a...

Page 7: ... the requirements are totally different for optimizing these interfaces 4 Digital and Video cables are much more susceptible to reflection phase cancellation problems because of their short wavelengths relative to cable length As you can see from the above no surprise that people hear differences in cables when connected to the variety of equipment in the market today Given the differences in inpu...

Page 8: ... There is Take the hand soldering for example We could do the job much faster by employing wave soldering machines as many companies do But that would mean exposing the entire circuit board to a molten metal bath a source of extreme heat shock that could result in long term reliability problems We don t skimp on testing or rush our products through some last minute go no go check at every stage in...

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