sound by singer high end audio video tel: 212.924.8600 - fax: 212.366.6351
242 West 27th St, 2nd Floor
New York, NY 10001
info@soundbysinger.com

Blog

 

Sign up for our newsletter:

BULLY SOUND

 

        CLASS A AMPLIFIERS

                REMEMBER THE DAYS !

 WHEN TOP TO BOTTOM COHERENCE , SPEED,   INNER DETAIL  AND DYNAMICS  WERE COUPLED WITH WARMTH AND MUSICALITY ? 

BULLY SOUND HAS BROUGHT THEM BACK !                                                                                   

 


 Named after a beautiful English Bulldog named Kiko who Bret Diagostino used to refer to as the" CEO",

Bully Sound is devoted to bringing back the magical sound of Class A Amplification without any of its attendant headaches such as unrealistic heat levels and outrageous physical proportions

Because the output circuitry in a class A amplifier is essentially on at full power all of the time, the unit can be hot to the touch and draws a considerable amount of continuous energy from the wall outlet. In order to minimize the amount of heat, BSC chose oversized internal heat sinks. The more heat sink area the more heat is dispersed overall, keeping the unit cooler.They also  added a bias level adjustment switch. The bias switch allows you to reduce the amount of class A bias on the output stage by 50% and eventually approximately 98% or what we call ECO mode. This allows the listener to vary the amount of energy and heat during a particular listening session. This comes in handy during the hot summer months or when critical listening isn't required.

Amplifiers

All of the BSC amplifiers exemplify the meaning of power and grace. Designed to integrate with virtually any loudspeaker, BSC amplifiers extract all of the texture, low-level detail and dynamic contrast your speaker can deliver. BSC products not only redefine the standard in their respective category but meet or exceed the performance of products costing 3 and 4 times more.

s

The BSC-100m 100 watt class A monaural power amplifier represents a delicate blend of finesse and power. Based around a 1,368 VA custom toroidal transformer and over 100,000 microfarads of filter capacitance, the ability to deliver continuous high power output is built into this amplifier. We believe an amplifier power supply should be able to deliver instantaneous power to a loudspeaker under virtually any load condition. The BSC-100m amplifier can double its 8 ohm rated output power into 1 ohm producing 800 watts continuously with maximum continuous output of almost 1200 watts. The BSC-100m has two transformers and three power supplies insuring power to the various sections of the amplifier is clean, quiet and abundant. The second transformer is designed for the soft turn-on and other low level circuits to allow the BSC-100m to be activated either by a 12 volt trigger source or the front panel switch. The BSC-100m draws less than 2 watts in standby mode.

The fully regulated driver section of the amplifier is based around a discrete, complimentary and DC coupled circuit. Signal paths are kept short and pass through the least amount of circuitry required to obtain the desired result. All the components meet or exceed military standards and are over specified to promote long life expectancy. All external signal connections between circuit boards and output connections are wired with reference level Transparent Audio cable.

The output stage is comprised of 4 massive internally mounted heat sink towers designed to cool the ten 230V, 17A, 200W output devices. The towers are optimized to disperse the heat of the 100 watts pure Class A power over a wide cross section reducing the overall chassis temperature. The BSC-100m also allows the user to quickly reduce the Class A bias on the amplifier to a half power approximately a 50W class A mode and further to a very low power ECO mode via the front panel rotary switch. Bias flexibility allows control over your power demand in different listening situations, but does not limit the amplifiers output power potential.

The BSC-100m has extensive protection circuitry that protects your investment against excessive DC voltage, extreme temperature, short circuit and over current conditions.

Paying attention to detail is a prerequisite for a BSC product. The BSC-100m boasts features like an attractive but tough aluminum powder coated chassis, custom machined hardcoat anodized front panel and decorative inserts, and solid brass machined gold plated output binding posts. BSC products have a 5 year warranty for parts and labor.

 

Specifications:

Output power - 100 Watts into 8 ohms, 200 watts into 4 ohms, 400 watts into 2 ohms, 800 watts into 1 ohm

Output Impedance - < 0.04 ohms at 20 Hz to 20 kHz

Gain - 26.1 dB

Input Impedance - 48K Balanced via XLR connector, 20K single ended via RCA connector

Input sensitivity - 1.4V rms Balanced or Single ended

Frequency response - 20 Hz to 20 kHz +/- .25 dB

Total Harmonic Distortion - <0.07% at 20Hz to 1kHz, <.6% at 10K, <2.0% at 20K at 100 Watt output 8 ohms

Signal-to-noise - > 93.5 dB, unweighted, > 96.5 dB, "A"-weighted, 100 W, 8 Ohms

Power consumption - Stand by Mode < 2 Watts, Idle: 500 W, Maximum: 1300 W

External Chassis top temperature < 53° C, 127° F at 100% Bias

Inputs - 1 single-ended via RCA connector, 1 balanced via XLR connector

Outputs - 1 pair custom designed gold plated binding posts .25", 6.4 mm spade terminal width

Dimensions - 16.5 in. W x 9.75 in. H x 18.25 in. D
420 mm W x 248 mm H x 464 mm D

Weight - In shipping carton: 86 lb, 39.00 kg
Unit Only - 80 lb, 36.2

 

 

 

 

Kiko in the flesh

 

 

 

 

 

 

 

 

 

 

 

BSC-60s

 

The BSC-60s, 60 watt class A stereo power amplifier shares every feature and is built to the same standards as its big brother the BSC-100m. This 60 Watt per channel amplifier is built around a split 1,368 VA custom toroidal transformer and over 50,000 microfarads of filter capacitance per channel. The BSC-60s amplifier can double its 8 ohm rated output power into 1 ohm producing 480 watts continuously both channels driven.

The BSC-60s is a dual mono design having discrete driver, output and protection circuits.

The output stage for each channel is comprised of 2 massive internally mounted heat sink towers designed to cool the six 230V, 17A, 200W output devices. The towers are optimized to disperse the heat of the 60 watts pure Class A power over a wide cross section reducing the overall chassis temperature. The BSC-60s also allows the user to quickly reduce the Class A bias on the amplifier to a 50% or approximately 30W class A mode and further to a very low power ECO mode via the front panel rotary switch. Bias flexibility allows control over your power demand in different listening situations without limiting power output.

The BSC-60s also boasts aluminum powder coated chassis, custom machined hardcoat anodized front panel and decorative inserts, and solid brass machined gold plated output binding posts. BSC products have a 5 year warranty for parts and labor.


 

 

Specifications:

Output power - 60 Watts into 8 ohms, 120 watts into 4 ohms, 240 watts into 2 ohms, 480 watts into 1 ohm both channels driven

Output Impedance - < .05 ohms at 20 Hz to 20 kHz

Gain - 24.3 dB

Input Impedance - 48K Balanced via XLR connector, 20K single ended via RCA connector

Input sensitivity - 1.33V rms Balanced or Single ended

Frequency response - 20 Hz to 20 kHz +/- .25 dB

Total Harmonic Distortion - <0.08% at 20Hz to 1kHz, <.7% at 10K, <2.0% at 20K at 100 Watt output 8 ohms

Signal-to-noise - >92.5 dB, unweighted, > 96.5 dB, "A"-weighted, 60 W, 8 Ohms

Power consumption - Stand by Mode < 2 Watts, Idle: 350 W, Maximum: 1300 W

External Chassis top temperature < 56° C, 133° F at 100% Bias

Inputs - 2 single-ended via RCA connector, 2 balanced via XLR connector

Outputs - 2 pair custom designed gold plated binding posts .25", 6.4 mm spade terminal width

Dimensions - 16.5 in. W x 9.75 in. H x 18.25 in. D
420 mm W x 248 mm H x 464 mm D

Weight - In shipping carton: 86 lb, 39.00 kg
Unit Only - 80 lb, 36.29 kg