Denon PMA-2500NE Flagship Integrated Amplifier with 2x 160W

PREMIUM INTEGRATED AMP REPRESENTING A NEW ERA OF AUDIO ENJOYMENT

Denon is one of the rare audio brands that continued to actively develop Hi-Fi components and accumulate, refi ne, and pass down Hi-Fi audio technologies. The 2500NE series, designed for today’s age, has been developed by both veteran engineers  and talented young engineers who have inherited the Denon technologies and expertise that have been cultivated over many years and decades. And the performance of the Denon PMA-2500NE goes well beyond that of Denon’s previous PMA-2000 series. With its ultimate built-quality, unique Denon technologies and state-of-the-art connectivity, the Denon PMA-2500NE truly is a masterpiece of sound technology. Thanks to the rear USB-B input and embedded high quality D/A converter, the PMA plays high resolution files up to 384kHz/32bit and DSD up to 11.2MHz from a computer in impeccable sonic quality. For the best performance from analogue inputs, the PMA features an Analog Mode which allows to switch off  all unutilized sections like the digital input circuitry or the low noise display for an unaltered audio reproduction.

Advanced Ultra-High Current (UHC)-MOS Single Push-Pull Circuit for balancing Power and Details

To achieve impeccable balance between delicate details and vigor in sound, the Denon PMA-2500NE employs Ultra High Current MOS (UHC-MOS) FETs, capable of producing ample current in a single push-pull configuration which deliver superior linearity in the output stage throughout the sonic range from musical details to robust current. The technique of driving multiple amplifier de-vices in parallel to secure robust current has solved the problem of muddiness in sound caused by uneven performance among the devices. And to achieve musical expression filled with the delicate nuances of sound, Denon has continued to focus on am-plification performed by one pair of devices. The Denon PMA-2500NE is endowed with high-voltage, large-capacity UHC-MOS FETs (peak current of 210A). In addition, the Dual FET + cascode bootstrap connection maintains a constant voltage for the UHC-MOS while improving temperature stability, to reliably bring out the superior acoustic characteristics of UHC-MOS.

Direct Mechanical Ground Construction to minimise unwanted vibration

The power section, mounted on a sub-chassis solidly con-structed with three layers of 1.6mm thick steel plates, has been positioned in the centre of the Denon PMA-2500NE. With heat sinks on both sides, this construction of well-balanced mass is in an ideal location to prevent unwanted vibration from affecting sound quality. In addition, the feet supporting the heavy weight of the power transformer, heat sinks, and chassis are made of highly rigid, solid Bulk Molding Compound (BMC), and high-density felt pads attached to the bottom of the feet further absorb vibration.

Advanced AL32 Processing Plus supporting 384-kHz/32-bit PCM input

For digital input, the PMA-2500NE employs Advanced AL32 Pro-cessing Plus, the latest version of Denon’s analogue waveform reproduction technology which utilizes unique data interpolation algorithms and also supports high-resolution 384-kHz/32-bit PCM signal input. These algorithms interpolate points that should exist before and after the points in large quantities of data to achieve a smooth waveform that is close to that of the original signal. By carefully restoring data that was lost during digital recording, the resulting playback sound is highly detailed, free of interference, accurately localized, richly expressive in the lower range, and beautifully faithful to the original sound. With the PMA-2500NE’s digital input, high-quality analogue signals that pass through Advanced AL32 Processing Plus are sent to the amp block at the stage that follows.

6-block chassis configuration

The PMA-2500NE’s chassis is configured of six independent blocks that house the phono equalizer and input circuitry, vol-ume control circuitry, USB-DAC circuitry, amplification circuitry, power section, and the control section. The chassis constructed with 1.6mm thick steel plates protects the signal circuits from external vibration and eliminates the adverse effects of mutual interference among the circuits.

USB-DAC supporting up to 11.2-MHz DSD and 384-kHz/32-bit PCM

The PMA-2500NE provides USB-DAC functions that support high-resolution 11.2-MHz DSD and 384-kHz/32-bit PCM input signals. DSD transmission methods support ASIO native play-back and DSD Audio over PCM Frames (DoP) with Wasapi or Kernelstreaming. Since asynchronous transfer is controlled by the PMA-2500NE’s master clock rather than the clock of a com-puter the transfer is free of jitter. The D/A converter used in the PMA-2500NE is the same 384-kHz/32-bit DAC PCM1795 used in the DCD-2500NE to deliver a clean, high-grade sound.

Robust power supply circuitry

Specifications