RESTEK EXTENT MONO POWER AMP High End Made in Germany.

RESTEK EXTENT MONO POWER AMP High End Made in Germany.

High end is performance plus quality plus design

The RESTEK EXTENT power amplifier combines a modern, timeless design with the latest amplifier technology and outstanding product quality in a unique way. Like all RESTEK devices, the EXTENT power amplifier was not only developed in Germany, but is also completely handcrafted in Germany. All components have been optimized for durability and ease of servicing. The design is modern and timeless: With the exception of the on/off switch, all controls have been placed on the back of the amplifier.

Stereo is mono plus mono

Two is always one plus one. This truism takes on a deeper meaning in amplifier technology: By separating the amplification power into two housings, a number of decisive advantages are achieved compared to integrated power amplifiers or even integrated amplifiers :

• Mono power amplifiers can be set up directly next to the loudspeaker. The supply cables to the loudspeakers can be extremely short. Electrical and audio losses are reduced to a minimum, which is particularly important for low-impedance loudspeakers.
• Crosstalk between the two stereo channels is impossible when using mono power amplifiers. The spatial impression of the music is therefore fundamentally more perfect than when using integrated two-channel power amplifiers.

For building the RESTEK EXTENT mono power amplifiers

The circuit technology within the output stage is divided into four areas:

• The amplifier stages, i.e. voltage amplifier (driver stage) and current amplifier (output stage)
• Operating and protection electronics to control and manage all functions.
• Instrument and status indicators for user information.
• Power pack for powering the entire device.

The RESTEK power amplifier EXTENT is designed for a minimum load impedance of 1 ohm. An output power of more than 1,000 watts can be accessed at this impedance. This means that the RESTEK EXTENT can also drive loudspeakers that are considered critical without restrictions and in excellent quality.

A successful design is characterized by timeless modernity

All controls have been relegated to the back of the device, except for the on/off switch. This not only contributes to the timelessly elegant design, but also shortens the signal paths in the device.

Clear displays give the user information about the status of the mono power amplifiers at all times. The large VU meter shows the applied output voltage and thus the power output. The backlight can be switched off at any time if desired.

Eight LED displays on the front show the operating and operating status and provide information about the status of the protective circuits.

Features of the EXTENT power amplifier from the E series

• Mirror symmetrical circuit design
• Central performance gauge
• Balanced and unbalanced inputs
• Overtemperature and offset monitoring
• Can be switched on remotely via the preamplifier
• cold lighting
• German manufacturing

Technical data of the power amplifier EXTENT

• Sine output: 260 watts at 8 ohms; 500 watts into 4 ohms; 840 watts into 2 ohms
• Music power: 350 watts at 8 ohms; 680 watts into 4 ohms; 1100 watts into 2 ohms
• Frequency response: 5 Hz …… 150 kHz at -3dB
• Harmonic Distortion: <0.02%
• Signal-to-Noise Ratio: >118dbA
• Rise time: < 1.5 usec
• Slew Rate: >40V/usec
• Damping factor: > 320 ( 8 ohms, 1kHz )
• Input Sensitivity: 2Vrms
• Input Impedance: 47K ohms unbalanced, 10K ohms balanced
• Dimensions (WxHxD): 340 x 210 x 506 mm
• Weight: about 35 kg
• Front designs: high-
  gloss polished acrylic glass, black, champagne or brushed matt silver aluminium, chrome-plated brass and special designs on request

Subject to change

More information about the RESTEK EXTENT power amplifier

User manual RESTEK EXTENT power amplifier 

Product sheet RESTEK EXTENT power amplifier 

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