Creek Evolution 2 Integrated Stereo Amplifier

Creek Evo 2 Integrated Stereo Amplifier's - remarkable design, delivering form AND function, without compromising it's most important ingredient – sound quality.

Significantly, Creek's Evolution 2 Intergrated Stereo Amplifier uses electronic volume control. Burr-Brown PGA2311, stepped resistor attenuator operated by microcontroller. This allows the user to adjust the volume accurately, in 1 dB steps, from 0 to -80dB. An analogue style rotary encoder, with 40mm solid control knob, is used to alter the volume from the front panel and display the reverse level in dB on a large blue coloured VFD display i.e. 80 is loudest and 0 is off. To buffer the signals in and out of the pre-amp, high grade Burr-Brown OPA2134 op-amps are used. Signal switching is performed by relays, which are driven by signal from a powerful microcontroller, similar to the Destiny amp.

Creek's Evolution 2 Integrated Stereo Amplifier is monitored by discrete transistor circuitry to protect against over current demand, short circuits and DC offsets. Relays mute the input and separate the loudspeaker output in the case of faults.

Gold plated input and output sockets have been chosen to provide a good connection and appearance for a product at its price point. Loudspeakers are connected with 1 set of 4mm terminal binding posts, with plastic touch-proof covers. The amplifier also has a headphone socket which is becoming an increasingly rare feature of modern amplifiers.

Mains connection is via a standard, fused, IEC chassis plug. A high quality power cord, with suitable mains plug for the country of use is supplied.

Evolution 2 Leaflet.pdf

Features and Specifications
POWER OUTPUT (both channels into 8W) 80 Watts
POWER OUTPUT (one channel into 8W) 90 Watts
POWER OUTPUT (one channel into 4W) 145 Watts
PEAK OUTPUT CURRENT INTO 1W > 10 Amps RMS
TOTAL HARMONIC DISTORTION (20 Hz to 20 kHz) < 0.05%
FREQUENCY RESPONSE 5 Hz to 50 kHz - 1 dB
SLEW RATE > 25 V per mS
GAIN x 52
INPUT SENSITIVITY - One channel driven/8W 480 mV line input
PRE-AMP OUTPUT LEVEL Follows input signal level via volume control
SIGNAL TO NOISE RATIO (‘A’ weighted) > 90 dB
SEPARATION (line inputs) > 60 dB at 1 kHz
MM PHONO SENSITIVITY & IMPEDANCE 3.5 mV 47 kW (when fitted)
MC PHONO SENSITIVITY & IMPEDANCE 0.75 mV 1 kW (when fitted)
POWER CONSUMPTION (at idle) 40 W
POWER CONSUMPTION (full power 10% THD) 340 W
WEIGHT (net) 8.6 kgs 19 lbs
SIZE (W x H x D) 430 x 80 x 340 mm 17 x 3.2 x 15.5 ins
MAINS VOLTAGE @ 60Hz 110/120V North America @ 50Hz 220/240V Europe, Asia and UK
REMOTE HANDSET EVOLUTION 2 Supplied (Uses NEC codes)

List of updates from Evo MK1 to Evo MK2
1.External, the front panel product designator now says EVOLUTION 2 Integrated Amplifier
2.Functionality the pre-amplifier now provides a separate AV input. Selecting AV switches the input signal direct to the power amplifier. This allows the front channel of a 5.1 Receiver to be amplified by the EVOLTION 2 conveniently.
3.The power amplifier section has been upgraded to provide better sonic and measured performance.
4.The power amp’s open loop gain has been increased by more than x2. This has been achieved by altering the current through its input and voltage gain stages to improve the high frequency gain. Therefore, negative feedback has been reduced, to allow the amplifier to have a higher closed loop gain. The effect is lower distortion and noise.
5.The preamplifier has been modified to remove a gain stage after the volume control. This has reduced unwanted noise, improved signal handling and lowered distortion. The distribution of gain in the pre-amp and power amps is now similar to Creek’s higher-end Destiny model.
6.Unwanted or unnecessary capacitors have been removed from the signal path, in keeping with standard Creek practice.
7.Signal paths have been shortened or rationalised to make improvements to cross-talk and interference suppression.
8.The power supply has been optimised to improve speed and timing of audio signals.
9.Mains transformer size has been optimised to improve performance.