Simply Elegant and Superb Sounding
In response to the demand for biamping from Creek 5350SE owners, Creek has developed a simple solution. The British company took a Classic 5350SE and removed everything that was not associated with the power amp section. The engineers removed the preamp, remote control volume, and input selection circuitry, plus the micro controller. The result is the elegantly simple Classic A53 Power Amp.
This is not a retrograde step, but is instead revealed as a step forward, when you study the specs. The 5350SE-integrated amplifier is already a power amp with passive preamp. In other words, if you were to eliminate the preamp section and drive it from the power amp with a separate preamp through the inputs on the back, the performance would be the same as for the integrated amp. The Classic Power Amplifier is similarly constructed, but obviously without the inputs, switches, knobs and other function controls unique to an integrated amp.
Two Pairs of Speaker Terminals
To accommodate biwiring, the Classic A53 Power Amp is fitted with two pairs of high current speaker binding posts. Although speaker A/B selection is not possible, the amp can drive two sets of 8-ohm speakers in parallel or separately drive different drivers in a single multi-way speaker through separate speaker cables.
Sophisticated and User Friendly
Short circuit, DC offset, and anti-thump protection circuitry makes the Classic Power Amp a sophisticated, user-friendly power amplifier, with a technical performance close to the best.
For the technically minded, the Classic Power Amp uses a high current, N channel only, MOS-FET power output stage, driven by a P channel MOS-FET phase splitter and double differential voltage amplifier with symmetrical 'Class A’ driver, to achieve ultra-low distortion and high speed with minimal negative feedback.
The input sensitivity is the same as the Classic 5350SE Integrated amp, so paralleling the integrated amp and power amp will achieve the same gain, which can be controlled by the common volume control in the Classic 5350SE. If used as a stand-alone power amp, the power amp can be used with a passive or active preamp as required. It will also work very well with the Creek OBH-22 remote controlled Passive Preamp.
The Ultimate as Sonic Performance
The Classic A53 Power Amp uses a 250VA toroidal transformer, together with multiple power supply capacitors totaling 31,000uF, 105 degree C, low impedance, to achieve the quality of computer grade capacitors but with very low inductance, for the ultimate in sonic performance.
Like other Creek amplifiers, the Classic A53 is DC servo controlled, to enable direct coupling from input to output and accurate low frequency roll-off, thereby eliminating sonically degrading capacitors from its signal path.