|威達影音頻道 (Radar Audio YouTube Channel)|
|HiFi 音響 (HiFi Review) No.386|
|發燒音響 (Audiophile) Aug 2018|
Elex-R Integrated Amplifier
The Elex-R is built to the highest standard and designed to deliver the best possible audio performance whilst 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 centre rating of 8.
Our time, effort & money have been spent on developing the circuit and construction utilizing the highest specification of components throughout. As part of the design we have included 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 whilst minimising 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 Consumption: 250 Watts
- Dimensions W 430mm x D 320mm x H 80mm
- Output power: 72.5W (8Ω Loading), 90W (6Ω Loading), 113W (4Ω Loading)
- Phono input: Sensitivity (72.5W 8Ω1.7mV (Load 47K in parallel with 220pF)
- Line input: Sensitivity (72.5W 8Ω 164mv (Load 30-50K)
- Tape output
- Level: 164mV with rated input
- Output impedance: 470
- Line output
- Level: 625mV with rated input
- Output impedance: 600