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REGA - Elex-R Integrated Amp

Integrated Amp

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Rega Elex-R Integrated Amp

Sublime Design Aspects Married with High-Performance Power Circuits and Phonostage

Rega Elex-R Delivers Astonding Control, Balance, and Dynamics

90WPC Rega Elex-R Excels No Matter the Analog or Digital Source

Since their release, the Rega Brio-R and Elicit-R integrated amplifiers have justifiably drawn rave reviews. Combining the best of both their worlds, Elex-R occupies the middle ground by advancing the sublime aspects of Brio-R and marrying them with the high-performance power circuits and phonostage of Elicit-R. The result: A striking component that focuses first, last, and always on music. Elex-R reproduces the original signal without any added coloration and gives you the control, balance, and dynamics associated with separates. Built to audiophile specs, the 90Wpc Elex-R boasts infinitesimal distortion levels, a combined feedback and passive volume control, and Class A driver stage. No matter the source—analog or digital—Elex-R excels.  

Design Innovation
The Elex-R is built to the highest standard and designed to deliver the best possible audio performance while remaining simple to use and easy to setup.The Elex-R is built into the full width Rega case with increased heat dissipation, which along with a larger transformer enables the Elex-R to deliver 90 Watts per channel into 6Ω and 72.5 Watts per channel into a design center rating of 8. Included are useful features like pre-amplifier output, to enable the new Elex-R amplifier to be used in a wide combination of systems and have avoided superfluous gadgets such as tone controls or a headphone socket as they can obstruct the signal path and degrade the produced sound quality.

The Elex-R has been built to Rega's extremely high standards of reliability and quality to ensure many years of musical enjoyment. The primary function of an amplifier is to boost and equalize the low level signal generated by a phono cartridge, DAC and CD player or other source component to a level that can drive the loudspeakers. It is vital that the amplifier achieves this while minimizing distortion, as this would directly affect the music. The distortion level is typically 0.007%; just under the clipping of the output. The volume control and pre-amplifier used in the Elex-R is designed to overcome the problems associated with the standard arrangement. This design uses a custom chip along with peripheral support IC's like a microcontroller and a custom made rotary volume control.

The Elex-R uses a combined feedback and passive volume control, where the feedback and input levels are varied to set the required volume level. The level and tracking between the two channels is set by the close tolerance parts in the pre-amplifier circuit and less by the actual potentiometer itself, thus keeping the mismatch of channels due to volume control tracking irregularities to a minimum.As well as keeping tracking irregularities to a minimum, this method also reduces noise and input overload as the control will only 'use' the required gain to amplify the signal.This form of volume control is normally only found in professional broadcast environments where accurate low noise control of levels is required.

Power Amplifier Technology
The output amplifier used in the Elex-R, Elicit-R and Brio-R was born after extensive research by Rega's engineers to develop a low source impedance emitter follower Class-A driver stage. This is based around a complementary pair of 150w Sanken Darlington output transistors. The technical and sonic improvement gained by the use of low impedance drivers is well known, however, it can feature high standing currents in the driver stage when using standard transistor configurations. By combining the low impedance driver with the Sanken Darlington transistors (with their imbedded thermal bias network running at a lower standing current) this combination forms a complementary emitter follower emulating Class-A conditions with good thermal stability with lower standing.

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Power Supply
    Voltage: 230v & 115v
    Frequency: 60/60Hz
    Power Consumption: 250 Watts
    230v Fuse: T3.15AL 20mm
    115v Fuse: T5AL 20mm
Output power
    72.5W 8Ω both channels driven - Design centre rating
    90W 6Ω both channels driven - Rega speaker impedance rating
    113W 4Ω both channels driven
Phono input
    Sensitivity (72.5W 8Ω1.7mV (Load 47K in parallel with 220pF)
    Maximum input level: 100mV
Line input
    Sensitivity (72.5W 8Ω 164mv (Load 30-50K)
    Maximum input level: 10v
Tape output
    Level: 164mV with rated input
    Output impedance: 470
Line output
    Level: 625mV with rated input
    Output impedance: 600

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