Creek Evolution 100A Integrated Amplifier

Creek Evolution 100A Int amp

At the heart of any high-end amplifier there must be a good power supply; The EVOLUTION 100A uses a massive 300 Watt, low profile, toroidal mains transformer, with multiple windings for high and low voltages and current, to separate the power amp, pre-amp and digital circuitry. Creek’s long-standing design policy of paralleling several small capacitors in the power supply creates an ultra-high specification capacitor, with low inductance and ultra low impedance. This significantly improves filtering and helps produce a very powerful and accurate sound from such a relatively small amplifier.

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 an un-balanced amplifier, so Creek has provided the consumer with a balanced line input for both the pre-amp and power amp input.

In addition, the optional RUBY DAC module also benefits from having a dedicated balanced audio connection to the EVOLUTION 100A’s pre-amp, via its flat foil cable, to avoid potential ground loops inside the amplifier.

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.

Technical Specification detailed technical information
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
THD < 0.002%
SNR >102dB – Line Input
Frequency Response 10Hz – 100KHz +/- 2dB Line
Gain 33.3dB (x46) via power amp input
Input Sensitivity 410mV
Crosstalk -80dB at 1Khz
DC Offest < +/-10mV
Pre-amp Inputs 5x RCA unbalanced – 1x Balanced XLR
Power-amp Inputs Input 3 & 4via RCA or XLR
Optional Tuner AMBIT FM/AM plug-in module
Optional DAC RUBY DAC – USB,SPDIF,Toslink, Bluetooth & FM Tuner
Outputs 2 Pairs
Headphone output Dedicated low impedance amp (<50 Ohms)
IR Bus Powered output for IR repeater
Operating Voltages 110V/230V Switchable
Consumption (at idle) <20 Watts (no standby)
(at full power)
500 Watts
Weight 9Kgs
Dimensions 430x60x280mm W/H/D