Creek EVO 5350 Features
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Creek Audio has developed a completely new high current bi-polar power amplifier to enable it to drive low impedance loudspeakers with modern dynamic music from high resolution sources. This has required a radical approach to enable it to be fitted into a slim-line case.
Each power amp is now built as a module, using a high proportion of Surface-Mount components, on a double sided PCB, bolted to a massive 18 fin heatsink. This means both channels are identical and can be fitted and removed easily for servicing if required. The power amp topology includes a cascoded differential voltage amplifier and MOS-FET current drive stage feeding a double Darlington output stage with four high-current bi-polar transistors to produce a very powerful amplifier capable of driving the most demanding of loads, with high resolution and accuracy. DC stability is maintained by a servo amplifier that rejects DC and allows the amplifier to be coupled directly without capacitors.
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In a further development of the Evolution 5350 integrated amplifier's pre-amplifier section, 5 inputs are selectable by high current gold plated relays and switchable access to the power amp allows the Evolution 5350 to be driven directly by the front channels of a 5.1 AV receiver. The standard Creek plug-in Phono pre-amp is also featured. A high-grade PGA2320 digitally controlled analogue volume control circuit together with OPA604 Op-Amps are used to provide a pre-amp with higher overload margin and lower distortion.
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To enable 2 x 200 Watts into 4 Ohms to be produced from a small case, Creek has developed a massive power supply using a high grade 350 Watt toroidal mains transformer that powers left and right power amp channels separately, plus pre-amp and digital circuits.
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To keep the power amps operating safely, they are monitored by discrete transistor circuitry to protect against over-current demand, short circuits, over-temperature and DC offsets. Relays mute the input and separate the loudspeaker outputs in case of faults.
Overall Specifications:
- Continuous output power 2 x 120W
into 8Ω and 2 x 200W
into 4Ω (both channels driven)
- THD <0.02% (ref. 20Hz - 20kHz)
- Signal/Noise ratio >90dB (A-weighted)
- Frequency response
1Hz – 50kHz (ref. -1dB)
- Channel separation >60dB at 1kHz
- Power Consumption
Rated power 500W
- Dimensions (W x H x D) 430 x 90 x 370mm (not including knobs or sockets)
- Net weight 10.5 kg
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