The ARCAM A25 is the best sounding, and most feature rich of our Radia Integrated amplifiers. The visual luxurious highlights hint towards the more luxurious musical experience that it offers. This is achieved with a 5th generation Class G amplifier design. You can expect the best sound quality and dynamics from what has always been […]
The ARCAM A25 is the best sounding, and most feature rich of our Radia Integrated amplifiers. The visual luxurious highlights hint towards the more luxurious musical experience that it offers.
This is achieved with a 5th generation Class G amplifier design. You can expect the best sound quality and dynamics from what has always been a better sounding, and more efficient Class of amplifier. New components and materials have been painstakingly analysed and reviewed to ensure uncompromising sound performance.
The rich feature set includes a USB-C input for your laptop, be it PC, MAC or Raspberry Pie! This augments a Bluetooth solution that includes Qualcomm AptX Adaptive technology with 24-bit HD audio to ensure the best sound quality no matter what you are playing. It can also connect to Bluetooth headphones so your listening experience can continue sensitively after dark.
Like any ARCAM integrated amplifier, we pay particular attention to the built in phono stage to ensure your records sound as lush and engaging as possible.
Features
ARCAM Class G amplification – for ultra-low distortion
100W per channel (8?) – powers loudspeakers effortlessly.
Bluetooth with aptX™ Adaptive Technology – for the best sound with the most convenience
Specially selected components and materials – to deliver on sound quality
Wired or Wireless Headphones – connect your headphones for quiet listening with, or without wires
All new Radia design – Purposeful yet playful
MM phono stage – ready for Turntables
Hi-Res Digital Audio Inputs – with the addition of USB-C for ultra Hi-Res audio
Plastic Free Packaging – for easy disposal of natural materials
The ARCAM A25 is the best sounding, and most feature rich of our Radia Integrated amplifiers. The visual luxurious highlights hint towards the more luxurious musical experience that it offers.
This is achieved with a 5th generation Class G amplifier design. You can expect the best sound quality and dynamics from what has always been a better sounding, and more efficient Class of amplifier. New components and materials have been painstakingly analysed and reviewed to ensure uncompromising sound performance.
The rich feature set includes a USB-C input for your laptop, be it PC, MAC or Raspberry Pie! This augments a Bluetooth solution that includes Qualcomm AptX Adaptive technology with 24-bit HD audio to ensure the best sound quality no matter what you are playing. It can also connect to Bluetooth headphones so your listening experience can continue sensitively after dark.
Like any ARCAM integrated amplifier, we pay particular attention to the built in phono stage to ensure your records sound as lush and engaging as possible.
Features
ARCAM Class G amplification - for ultra-low distortion
100W per channel (8?) - powers loudspeakers effortlessly.
Bluetooth with aptX™ Adaptive Technology - for the best sound with the most convenience
Specially selected components and materials - to deliver on sound quality
Wired or Wireless Headphones - connect your headphones for quiet listening with, or without wires
All new Radia design - Purposeful yet playful
MM phono stage - ready for Turntables
Hi-Res Digital Audio Inputs - with the addition of USB-C for ultra Hi-Res audio
Plastic Free Packaging - for easy disposal of natural materials
Headphone Output: Maximum output level (RMS) into 32Ω/300Ω 2.5V/5Vrms, Load range 16Ω - 2kΩ
Mains voltage 100V or 110–120V or 220–240V, 50–60Hz
Power consumption (maximum) 500W
Power consumption (standby) <0.5W
Dimensions W x D (including speaker terminals) x H (including feet) 431 x 344 x 98mm
Weight (net) 9kg
Weight (packed) 12kg
Supplied accessories
Mains lead(s)
Remote control with 2 x AAA batteries
Quick Start Guide
Important Safety Instructions
The 851W has class XD amplification at 200W into 8 Ohms in stereo mode or 500W RMS per amp in mono bridged mode, separate toroidal transformers for the power amp and input/other circuitry, and terrapin impedance buffering modules. All in all it\'s the best sounding amplifier we have ever made.
Our proprietary Class XD amplification Separate toroidal transformers for power amp and input/other circuitry Our bespoke Terrapin impedance buffering modules – separating amplifier and signal impedance 200W into 8 Ohms stereo mode or 500W RMS per amp mono bridged mode CAP5 protection from DC spikes, overheating and clipping All metal chassis with premium components Remote Control – Compatible with the entire 851 range
Power output – stereo/mono 200W per channel into 8 Ohms 350W per channel into 4 Ohms Power output – bridged mono 500W 8 Ohms 800W 4 Ohms THD (unweighted) < 0.001% 1 kHz < 0.005% 20 Hz - 20 kHz Frequency response 5Hz – 80kHz S/N ratio (ref 1W / 8 Ohn) >90dB (unweighted) Sensitivity – stereo or mono 1.5V rms unbalanced 1.5 + 1.5V rms balanced Sensitivity – bridged mono 0.775V rms unbalanced 0.775V + 0.775V rms balanced Input impedances Balanced input 38 kOhm Unbalanced input 68 kOhm Power amp damping factor > 110 at 1 kHz Max. power consumption 2400W Standby power consumption Standby
Overview
Integrated Amplifier with DAC mode
Integrated Amp with USB-DAC for High-res Audio and "Simple & Straight” Engineering Design from High-end Models
2 x 160 W (4 ohm) output
Advanced Ultra High Current (UHC)-MOS Single Push-Pull Circuit Power Amplifier with new Schottky barrier diodes
DAC Master Clock Design
USB-B input for High Resolution Audio up to 384 kHz / 32 bit and 11.2 MHz DSD
Digital isolator to eliminate high-frequency computer noise on the USB-B
Low noise OLED display for source and sample rate indication
Analog Mode for pure audio reproduction switching off digital audio circuitry and display
Advanced AL32 Processing Plus
Direct Mechanical Ground Construction to minimize unwanted vibration
Chassis construction with 6 independent blocks to eliminate noises
Leakage-cancelling-mounted twin transformers
Main transformer with separate power supplies for analogue and digital circuits
Wide dynamic range playback, supporting high-resolution audio sources
High-grade volume control for precise adjustment
2 Digital Optical and 2 Digital Coaxial inputs
High performance MM & MC Phono Equalizer Amp
Available in Premium Silver
Denon is one of the rare audio brands that continued to actively develop Hi-Fi components and accumulate, refine, and pass down Hi-Fi audio technologies. The 2500NE series, designed for todayʼs 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 PMA-2500NE goes well beyond that of Denonʼs previous PMA-2000 series. With its ultimate built-quality, unique Denon technologies and state-of-the-art connectivity, the 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.
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