The Emperor Integrated amplifier incorporates the low level signal circuitry from the Emperor Preamplifier and the power stage from the Emperor Extreme stereo power amplifier to create an integrated amplifier of exceptionally high quality
It uses a large toroidal power transformer and conservatively rated reservoir capacitors, enabling it to deliver 600W RMS into 4 ohms with both channels driven. This ensures that it will drive any German Physiks loudspeaker and almost any other makers’ loudspeakers, while providing excellent dynamics and bass control. Large heat sinks concealed within the case, allow the unit to run continuously at high power whilst remaining cool, thereby improving reliability.
3 balanced and 3 unbalanced inputs are provided per channel, allowing flexibility for use in a wide range of system configurations. Each channel also has 2 balanced and 2 unbalanced preamplifier section outputs, making it easy to add additional power amplifiers when the unit is used in multi-amp systems. Direct inputs are provided for the power amplifier stage, allowing this to be used independently of the preamplifier section.
High voltage power supply rails for the low level signal stages and a balanced output stage ensure a very wide dynamic range, which combined with the design’s very wide bandwidth provides exceptional transparency and resolution
The volume control uses a sophisticated relay-switched resistor network design, allowing precise adjustment with very accurate channel balance. This also gives the volume control stage a constant input and output impedance, which prevents the changes in sound quality that can occur at different settings with simpler designs.
The heart of an amplifier is the power supply, so great care was taken with the design to ensure that it would be able to provide the audio sections with a source of power that was as stable and noise free as possible.
The preamplifier section, power amplifier stage and control section all have their own independent toroidal power transformers. These were chosen for their low external magnetic fields. To minimise the effects of stray magnetic fields, all four transformers are housed in their own screened enclosures.
The amplifier’s incoming mains power is not routed through the power switch, as these can have a detrimental effect on the sound, more so with power amplifiers. Instead, this switch supplies power to the standby circuit and when the front panel On button is pressed, this turns on a high current relay which carries the mains power.
When a large power supply is connected to the mains supply, the initial in-rush current can be high enough to trip circuit breakers or blow fuses. To prevent this, a 4-stage soft start circuit allows the power supply to “slowly” charge before it is switched out of the circuit. This also reduces the stress on the power relay.
High quality power supply capacitors are used with additional decoupling capacitors located physically as close as possible to where they are needed in the circuit.
Great care was also taken with the internal grounding to prevent the introduction of noise.
Easy to use
A large front panel display provides a clear indication of the volume control setting and unit status
Input selection and volume level may be adjusted from the front panel, or via an infrared remote control, which is included. This is housed in a heavy machined aluminium body to match the solid feel of the unit’s main chassis.
Premium grade WBT loudspeaker terminals provide a reliable and high quality connection and are also easy to secure and release.
The Emperor Integrated amplifier is designed and manufactured in Germany. To ensure excellent sound performance and high reliability, great care and attention has been devoted to all stages of production: from the initial design to component selection and final manufacture
Before a single component was soldered, many hours were spent carrying out detailed computer modelling, in order to optimise the technical performance of the various sections of the design. All the components were selected for both their technical excellence and reliability. To further enhance the reliability, all components are operated well within their maximum limits. The final selection of components and topology was made on the basis of exhaustive listening tests, as well as detailed measurements.
Great attention was paid to the aesthetics and the mechanical construction. This is a very high quality product, so the look and build quality had to be of a commensurate level. The construction uses an internal steel chassis with a 15mm thick silver anodised aluminium outer case.
This provides magnetic screening, together with structural rigidity to minimise the effects of external vibration. The fit and finish of the chassis is first class and this combined with the impressively smooth feel of the controls, reassures the user of the high level of quality that this product offers.
Before dispatch, each unit is given a prolonged burn-in run before being subject to an intensive battery of electronic tests. Only when it has successfully passed these and been given a final physical inspection is it judged ready to be sent to the customer.
Output power (Both channels driven)
300W RMS into 8 ohms
600W RMS into 4 ohms
0.5Hz to 80kHz (-3dB)
1W into 8 ohms
THD + Noise
0.01% (22Hz to 22kHz)
1W into 8 ohms
Maximum dynamic range
Signal to noise ratio
- 91 dB A
A weighted @ 1W into 8 ohms
Unbalanced x 3 pairs
Balanced x 3 pairs
Unbalanced x 2 pairs
Balanced x 2 pairs
Power amp direct inputs
Unbalanced x 1 pair
Balanced x 1 pair
1 pair of high quality WBT screw
terminals per channel
Direct input select
Direct input gain
Infra red remote control
Trigger input & output for remote operation
Custom cable used for internal wiring
Silver anodized aluminium
474 mm W x 240 mm H x 474 mm D