CREEK EVOLUTION 100A
CREEK EVOLUTION 100A
7 - 10 Day Lead Time
Creek Audio products can only be shipped to Canadian locations
To maintain a family resemblance with the lower powered amplifier, the EVOLUTION 100A is housed in a similar slim case with
The front panel features a large OLED (Organic Light Emitting Diode) display. The white on black display provides higher clarity and resolution than a normal display and has a wide range of
In addition to greatly increased performance, thanks to ingenious new circuit design, the EVOLUTION 100A has been equipped with 2 sets of high quality loudspeaker binding posts, with local and remote switching for A & B outputs. Optional extras include the ability to plug the Sequel mk2 Phono pre-amp inside and add
At the heart of any high-end
After testing several methods of building a high performance and high efficiency power amplifier, suitable for this new model, David Gamble – Creek Audio’s Senior Engineer – created a unique Class G circuit especially for the EVOLUTION 100A. David chose to use four Sanken STD03 complimentary power Darlington transistors per channel, as used in the EVOLUTION 50A, which feature built-in thermal compensation. Compared to the EVOLUTION 50A, he improved the performance of the voltage gain circuitry, which, in combination with the output stage, now achieves extremely high open-loop gain and exceptionally low distortion, without sacrificing stability. The result is an exceptional power amplifier circuit with very low output impedance and high output current capability. This combination provides exceptional speed and control suitable for driving most loudspeakers.
To increase the power output of the smaller EVOLUTION 50A, yet still retain the same case size, David Gamble developed a cunning Class G circuit which runs normally at a lower voltage for power levels up to 25 Watts into 8 Ohms. When required to produce more than 25 Watts, the amp automatically swings to a higher secondary voltage, to increase the output power capability to over 100 Watts into 8 Ohms.
Statistically, average audio signals are mostly below half the maximum voltage swing available, which incidentally is only one quarter of the power. As the dissipation of lossy ‘idle current’ in a Class A/B amp (in the form of heat) is much lower for a 25 Watt amp than the potential 100 Watts in
The Pre-amp circuit provides high levels of flexibility and control, via unbalanced or balanced inputs. It has multiple input options, switched either electronically or by gold contact relays. It also has a State-of-the-Art electronic Volume, Balance and Tone controls. Volume control and op-amp circuit outputs are all buffered with constant current sources, to provide improved load tolerance and stable distortion characteristics.
Correct grounding is difficult, if not impossible, in
It is a modern listening trend for headphones to now be fed from low voltage sources, such as smart-phones and portable music storage devices. This required the development of low impedance headphones, to draw the required current to make them loud enough to satisfy the consumer. This trend has also necessitated a re-think of circuitry used in modern Hi-Fi amplifiers, to drive such low impedance headphones, together with the traditional medium to high impedance versions also.
Creek Audio has taken the unusual step of driving the headphone output socket of their EVOLUTION amplifiers from a dedicated low impedance source. Instead of the headphone output being sourced from the power amplifier, the headphone output is derived from a dedicated amplifier, with only a few Ohms in series for protection against short circuits. This dedicated HP amp is now located on the pre-amplifier circuit board.
POWER OUTPUT>110 Watts into 8 Ohms
POWER OUTPUT>170 Watts into 4 Ohms
CONTINUOUS CURRENT>8.5 Amps (sine wave)
MAX CURRENT+/- 26 Amps, current burst into 0.5 Ohms
OUTPUT IMPEDANCE<0.05 Ohms – 20Hz to 20KHz
SNR>102dB – Line Input
FREQUENCY RESPONSE10Hz – 100KHz +/- 2dB Line
GAIN33.3dB (x46) via power amp input
CROSSTALK-80dB at 1Khz
DC OFFEST< +/-10mV
PRE-AMP INPUTS5x RCA unbalanced – 1x Balanced XLR
POWER-AMP INPUTSInput 3 & 4via RCA or XLR
OPTIONAL TUNERAMBIT FM/AM plug-in module
OPTIONAL DACRUBY DAC – USB
HEADPHONE OUTPUTDedicated low impedance amp
OPERATING VOLTAGES110V/230V Switchable
CONSUMPTION (AT IDLE)<20 Watts (no standby)
(AT FULL POWER