Elex Mk4 Integrated Amplifier

The Elex MK4 is a high performance stereo integrated amplifier designed to deliver the purest musical performance. Housed in a case designed to match the rest of the Rega range, the MK4 builds on previous Rega designs using their multi-award winning class A/B power amplifier circuit which delivers an impressive 72W per channel into 8Ω loads (90W into 6Ω). New rear connectivity options are available with the Elex MK4 now including a Rega DAC circuit with two digital inputs and a high quality headphone output conveniently located on the front panel.

Bringing your music to life
The Elex MK4 is capable of driving difficult loudspeakers with ease and will integrate perfectly into any audio system by offering a wider range of connectivity options. In addition to the line level, digital inputs and a high quality moving magnet phono stage, you will also find Pre-out and Record Out functionality alongside a headphone output. Special attention has been paid to the selection of key audio components. Discrete circuitry, high quality relays, polypropylene capacitors and Sanken output transistors are used throughout the design. 

• Robust 72Wpc output (@ 8Ω)
• High quality, built-in Moving Magnet phono stage
• High performance Rega DAC circuit for digital inputs
• 2x Digital Inputs:
  Input 1: Coaxial (via RCA)
  Input 2: Optical (via TOSlink)
• 4 Line level inputs
• Headphone output (6.3mm Stereo Jack, aka 1/4")
• Direct Input
• Record input
• Custom Designed Case
• Thermal Cut-Off Circuit
• Lifetime warranty against manufacture defects

Amplification Circuit
Rega's engineers have re-engineered the entire ELEX circuit board to optimize performance. MK4 builds on previous Rega designs by using their multi-award-winning Class A/B power amplifier circuit to deliver a powerful 72W per channel into 8Ω loads. Power is provided using a quiet multi-stage linear supply whilst supply rails for digital and analogue sections are galvanically isolated.

Digital Circuit / DAC
The DAC is based closely on the hugely successful Rega DAC-R circuit. The galvanically/optically isolated digital inputs utilise a Wolfson S/PDIF receiver IC to provide exceptional detail and clarity from any connected source. Output is provided by a Wolfson DAC and Rega designed discrete line-driver circuit. Rega's engineers have worked exceptionally hard to ensure that the analogue side of the circuit is not affected in any way by the introduction of digital inputs.

MM Phono Stage
A high performance Rega designed integrated moving magnet (MM) phono stage has been carefully built into the circuit. The RIAA equalization has been split into two stages to minimise interaction. Polyester capacitors have been used in the signal path and polypropylene capacitors are used in the RIAA equalization circuits.

Headphone Output
Rega has taken great care to incorporate the headphone section of the Elex MK4. The headphone circuit has been configured so that speaker switching is performed by the output mute relay, which avoids obstructing the signal path and thus ensuring zero loss of performance when the circuit is not in use.

Custom Case
The custom case design and construction for the Elex MK4 brings this model in-line with the rest of the Rega range and provides improved heat dissipation by using the entire case as an ultra efficient heat sink.

Protection
The Elex MK4 also includes Thermal Cut-Out, short circuit protection and DC protection to prevent the risk of damage from excess heat, excessive currents or short circuits.

Power Amplifier Output:
     • 8Ω: 105Wpc
     • 6Ω: 127 Wpc*
     • 4Ω: 162 Wpc*

Headphone Amplifier Output:
   • No Load: 11.5V
   • 300Ω: 8.1V
   • 54Ω: 3.6V
   • 32Ω: 2.4V

Digital Inputs:
   • Input D1: S/PDIF Isolated 0.5V 75Ω Co-axial
   • Input D2: S/PDIF Optical Toslink
   • Supported Sampling Rates: 32, 44.1, 48, 88.2, 96, 176.4, 192kHz
   • Supported Bit Depths: 16 to 24 bit
   • THD+Noise: Typically 0.004% at 1kHz (DAC Output via Tape Out)

Dimensions (WHD):  17x3.25x13.4"
Weight: 24.3 Lbs
Shipped Weight: 25 Lbs
Power Consumption: 250W Max
Fuse Value: Small, Slow, 5A

* NOTE: Continued high volume use into loads of 6Ω or lower may cause the Elex's case to exceed 104°F above ambient temperature, which will activate thermal shut-down. Once the unit cools, normal operation will resume. Do not place unit inside an enclosed space.