The Concept
The Genesis Signature 100 watt Monoblock configuration offers a vastly
improved amplifier, over its predecessor which has been in production since
1988. This established design has undergone improvements which feature a higher
current driver stage, uprated power supply for both the driver and output stage,
individual tube protection with outboard bias monitoring facilities and best of
all a superb new output transformer which achieves even greater bandwidth than
before.
The Monoblock configuration provides optimum stereo separation and
consequently the strongest imaging and soundstage, while the full 100 watts
output, available into the most difficult of loads, ensures an ease and
effortlessness at all volume levels, not possible with lower powered amplifiers.
The loudest musical crescendo, the deepest bass guitar note, the lowest
rumble of an organ pipe are all conveyed with authority, control and total
freedom from clipping which is vital for a life-like, believable musical
experience. This is not power-for-power sake, this is vital energy for the total
enjoyment of music.
The high tension rail incorporates new smoothing capacitors, which are half
the ESR (Equivalent Series Resistance) of the previous supply capacitors. These
new devices use the latest manufacturing techniques complimenting the high speed
power supply. The class A input stage utilizes its own dedicated solid state
power supply, as does the fully balanced driver stage, featuring dedicated
transformers these stages assist the amplifier to achieve maximum transient
response without any phase shift. All signal paths are hard wired with PCOCC and
silver cabling.
Component quality is of high standard, selected for maximum performance and
reliability, featuring 1% metal film resistors from Vishay, Roderstein and Holco
and high quality polypropylene, film and foil capacitors. For long life and
reliability each Monoblock is fitted with an electronic soft-start, ensuring a
gentle power-up sequence, without causing stress to the tubes as the stiff power
supply comes on line. As with all our amplifiers build quality is of supreme
importance ensuring extended service in the field. The chassis is hand-crafted
from one piece of sixteen gauge non-magnetic high purity stainless steel. A new
double-sided PCB with 3 ounce copper on 3/32 fibreglass, offer the tube bases
mechanical and electronic stability which is important in a device that warms
and cools as often as a tube amplifier. The double sided through plated
connection also improves coupling with the remainder of the circuit and is the
best alternative to hard-wiring.
The output stage utilizes four EL34 pentodes, operated in Ultra-Linear S
form, which is the only type of circuit to provide the lowest amount of total
harmonic distortion. Feedback is kept to a bare minimum (11dB) keeping the
amplifier frequency linear and stable into any load. The high performance output
transformer, has been developed over the last two years to create an optimum
match between modern EL34 output tubes and the load it is designed to drive.
This proprietary design is capable of extended bandwidth of over 70 kHz, which
is exceptional for a device so large. Its agile performance can be likened to
amplifiers a tenth of this power rating, incorporating specialist hand wound
manufacturing techniques, including inductance measurements during winding for
extra precision.
The Genesis Signature Monoblock set a modern standard which is unequalled by
many of its tube or solid state rivals, powerful enough to drive virtually any
loudspeaker, precise enough to play music of any kind from classical to rock,
this amplifier uses superlative design and manufacturing techniques allowing the
listener to hear their music collection as it should be heard.
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Technical Specifications
Input Stage Specification
- No.of Inputs - 1 single ended input per channel
- Input Sensitivity = 0.775 mV RMS for max power @ 100W
- Input Impedance = 130 kohms
- Tube compliment - 2 x ECC81/12AT7 twin triode
Output Specification
- Class of Operation - AB
- Type of Operation - push pull, ultra-linear
- Output Power = 100 watts RMS into 8 ohms
- Nominal Speaker Load = 8 ohms
- Rated Power Bandwidth = 12Hz - 58kHz @ 100w - 1dB
- Frequency Response = 4 Hz - 68kHz @ 1W - 1dB
- Total Harmonic Distortion = 0.05 % @ 1W
- 0.3% @ Half Power
- 1.0% @ Full Power
- Signal to Noise Ratio = -96 dB unweighted, input shorted
- Tube Compliment - 4 x EL34/6CA7 pentode
Electrical Specification
- Power Consumption - 135 W quiescent @ 240V
- 270 W full power @ 240V Voltage Settings available - 100V, 110V, 120V,
220V, 230V, 240V AC
Physical Characteristics
- Dimensions - 350 x 270 x 150mm (W, D, H)
- Preamplifier Weight - 16kg
"Explosive bass dynamics, a midrange clear as a bell and shimmering
treble..."
"Walking bass lines in particular came across beautifully, their
progression and intent were so clearly discernible" "...- they're
tight and fast, taking no prisoners." - Hi-Fi World, June 1994
Genesis - Winners of the Audio Art "Best of the Year 1992" Award in
Taiwan. The first tube amplifier combination to win such an award.
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