The integrated amplifier

The heart of the E-series is the PA 1000 E, a powerful, outstanding sounding integrated amplifier that was developed from the legendary Power Plant and has been further improved in terms of sound.

The preamplifier essentially determines the sound characteristics of the entire amplifier and was therefore developed for absolute neutrality, musical veracity and maximum dynamics. The use of state-of-the-art audio operational amplifiers on separate, voltage-stabilized circuit boards (OAD = Op Amp Decoupling), ensures absolutely load-independent, and thus undistorted, signal processing. Of course, there is a two-stage volume control with a high-end ALPS precision potentiometer to achieve high overload resistance and large signal-to-noise ratios. The complex equalization and loudness function can be completely removed from the signal path by a flat switch.

The PA 1000 E is equipped with high-quality balanced and unbalanced inputs. The balanced input section (XLR) is located on its own circuit board, is fully balanced and is directly coupled to the preamplifier via the highest quality differential amplifiers. The RCA and XLR inputs can be flexibly assigned to different source devices. The input selector switches are equipped with highest quality gold contact relays to ensure freedom from distortion and noise.

Technology

Basically, our new amplifiers of the E-series are so-called PWM power amplifiers (PWM=Pulse Width Modulation), with an analog modulator. They are a complete T+A in-house development and are not integrated, ready-made IC amplifiers “off the shelf”, but discretely constructed power amplifiers equipped with the latest, ultra-fast MOSFET transistors and high-current, intelligent driver components.

The power amplifiers feature analog negative feedback, which compensates for voltage fluctuations in the power supply and thus eliminates supply-voltage-induced signal distortion, which is otherwise unavoidable with pure “forward concepts”. The negative feedback is designed to be relatively weak and frequency-dependent (stronger in the bass range, where large currents flow, and decreasing in the mid-high range). This results in a very controlled, resolved sound image that never tends towards sharpness, with a perfectly contoured and well-defined bass range. The liveliness and musicality of this concept is unique.

Switching power amplifiers, when properly designed, can not only sound outstandingly good, but they can also produce enormous power with significantly lower losses with little waste heat.

It is particularly important to have a load-stable and high-current power supply that can reliably supply the output stages even with very high power requirements and pulse peaks and does not collapse. The newly developed power supply is therefore stabilized several times, the output stages are equipped with high filter capacities and the hard toroidal transformer is floating and decoupled. That’s why even power-hungry Speaker are driven effortlessly, plus the PA 1000 E delivers up to 50 amps of peak current.