Cyrus 6

This affordable integrated amplifier boasts an impressive range of abilities. Amongst these is the uncanny skill to present a 3 dimensional audio picture of the recorded performance along with surprisingly powerful dynamics for such a compact amplifier. The Cyrus 6 circuitry benefits from all the development work of its larger sibling Cyrus 8. Although we have accomplished significant savings by installing a smaller power supply in the 6, the main boards are almost identical. Once our customers experience a system of this quality they often consider upgrading to the next level of performance and the Cyrus 6 can easily be upgraded by our factory. You simply return your Cyrus 6 to our Huntingdon service facility where it is upgraded to full Cyrus 6vs or 8vs specification. The charge for this upgrade is only slightly more than the difference in price between the amps to cover labour and shipping.

After planning such an extensive development program for the Cyrus 8, the design brief for the Cyrus 6 amplifier was really quite simple – to design a 40W amplifier with all the new characteristics of its 8 series counterpart! Quite a tough task when meeting the expected budget for a 40W amplifier. By scaling down the massive power supply of the Cyrus 8, this brief has been executed in full with the Cyrus 6 inheriting the power amplifier and power supply design advances, the higher current output stage, the full complement of selected audiophile components, the soft standby switching and the advanced thermal management of the Cyrus 8. With these attributes the Cyrus 6 is able to deliver remarkable specifications for a 40W amplifier. The rated 30A peak current capability and 173W peak power into a 1 ohm load would not shame an amplifier of double this capacity. In addition, the ambitious Cyrus 6 owner has the further benefit of an upgrade path through full Cyrus 8 specification and beyond, by opting for a Cyrus factory upgrade.

System optimisation – The Cyrus 6 packs in all the essential features to optimise a quality audio system. A full 40W + 40W 8 ohm output, Six inputs plus full tape monitor, Bi-wirable speaker terminals, headphone output with dedicated power amplifier, Preamplifier output (for bi-amping) and a sophisticated control system with system remote control are all provided.

High efficiency power amplifier – Sharing technology with the Cyrus 8, the Cyrus 6 also uses dual charge pumps with linear post-regulators for the power supply of the voltage amplifier stage, increasing and stabilising the supply, eliminating any trace of power supply ripple and noise, and with no sag under load. These high efficiency techniques ensure maximum power transfer from the power supply to the speaker load.

Higher current output stage – Featuring identical output transistors to the Cyrus 8, the Cyrus 6 has a massive 30A current drive capability leaving plenty of headroom to deliver the currents demanded from the power amplifier stage when driving real music into a real loudspeaker load.

Audiophile component specification – Using the same topology and components in the critical audio signal path, the distinctive sound signature of the Cyrus 8 is clearly audible when auditioning the Cyrus 6.

New peripheral circuitry for soft standby switching – Electronic standby switching has always been a feature in Cyrus amplifiers. Electronic switching completely avoids the problems of contact degradation which occur in the speaker relays used in most other manufacturers designs. As these amplifiers age, the relay contacts degrade and contact non-linearity gradually rises, degrading the sound. The Cyrus electronic system works by effectively ‘tri-stating’ the power amplifier to prevent it from delivering any current to the loudspeaker whilst set to standby, completely avoiding the need for a relay in the signal path. Secondary benefits are instantaneous disconnection of the power amplifier from the load if an external fault condition, such as a speaker short-circuit, are detected by the control system. In the latest revision of this system for the Cyrus 6 & 8, a more sophisticated control circuit soft switches the power amplifier silently between standby and operational modes.

Advanced thermal management – New thermal measurement techniques are employed by the computer control system of the Cyrus 6 to intelligently control the outer skin temperature of the casting, maximising the thermal performance available to the amplifier in any environment.

Technical Information

Electrical

Line inputs – 5 Line + 2 Tape
Outputs – Bi-wire Loudspeakers, Tape-out, Preamp-out, Headphone
Power Supply – 107VA Toroidal transformer with 5 regulated rails
Communications – MC-BUS System BUS
Remote Control – Supplied with Cyrus Amp/CD/tuner system remote control

Specifications

Continuous Power – 40W/CH (both driven into 8 Ohms) 50W/CH (both driven into 4 Ohms)
Burst Power – 173W (IHF, one channel driven into 1 Ohm)
Distortion – 0.003%, 1kHz (into 8 Ohms) 0.005%, 1kHz (into 4 Ohms)
Frequency Response – -3 dB, 0.2Hz and 85kHz
Damping Factor – (1kHz) 150
Sensitivity – (40W) Line: 179mV
Input impedance – 50kOhm (RCA).
Output voltage – 200mV (Tape out), 380mV (Pre out)
S/N Ratio – 100dBA (ref. 40W)
Channel Balance – ±0.2dB (0dB to -63dB)
Volume control accuracy – ±0.1dB (0dB to -63dB)
Dimensions – (H x W x D) 73 x 215 x 360 (mm)
Weight – 3.7kg
Finish – Silver or Satin Black

Designed and Manufactured in the United Kingdom