PA 2500 R Integrated Amplifier
Twice as tall, higher output power and even more connection facilities – the PA 2500 R exceeds the specification of the PA 2000 R in many areas, but its character in terms of sound quality is in no way inferior to its smaller sibling. This by no means goes without saying, because very powerful amplifiers often forfeit the finer points of dynamics and detail tracery. Our PA 2500 R integrated amplifier circumvents this danger: its basic circuit is the same as that of the PA 2000 R, and even the circuit board layouts are identical. However, its heat-sinks are twice the size, and the case accommodates two of our new high-performance mains power supply units, with the result that it can deliver more than 280 Watts of continuous power per channel into 4 Ohms loudspeakers. The amplifier is therefore effortlessly capable of controlling speakers which are extremely critical in terms of phase and impedance. The PA 2500 is even more powerful than the smaller machine, but retains exactly the same dynamism and cultured sound.
Technical Specifications
| Frequency response + 0 / − 3 dB | 0,5 Hz – 300 kHz |
| Signal / noise ratio, unweighted / A-weighted | 105 / 109 dB |
| Total harmonic distortion/Intermodulation | < 0,001 % / < 0,001 % |
| Channel separation | > 90 dB |
| Loudness | Switchable, variable to suit loudspeaker efficiency |
| Tone controls Bass Treble | Switchable, channel-separate −6 … +8 dB −6 … +8 dB |
| Nominal input sensitivity | |
| High level (RCA) | 4 × 250 mV … 4 Veff/20 kOhms |
| Balanced (XLR) | 3 × 500 mV … 8 Veff/5 kOhms |
| Phono-MM (optional*) *Phono module replaces one high-level input | 1 – 5 mV, 16 Capacitances |
| Phono-MC (optional*) *Phono module replaces one high-level input | 60 – 1000 µV, 16 Impedances |
| Headphone | 50 Ohms |
| PRE out RCA | Nom 1 Veff, Max 9,5 Veff, 75 Ohms |
| PRE out XLR | Nom 1,45 Veff, Max 19,6 Veff, 75 Ohms |
| Nominal output per channel | into 8 Ohms 140 Watts into 4 Ohms 280 Watts into 2 Ohms 560 Watts |
| Frequency response + 0/– 3 dB | 1 Hz – 150 kHz |
| Slew rate | 60 V/µs |
| Damping factor | > 65 |
| Total harmonic distortion | < 0,02 % |
| Reservoir capacity | 120000 µF |
| Control interface | R2-Link |
| Remote control | SRC 1 |
| Mains connection | 100 – 120 V or 200 – 240 V, 50 – 60 Hz Max. 2000 Watt |
| Standby | < 0,5 W |
| Additional features | Trigger input +5V … 20V via adapter plug for remote power-on Input 3 (symmetrical) or 5 (asymmetrical) can be configured as Surround Pass Through |
| Optional Accessories | PHE-P/PA R MM or MC phono content_default | Power Three HD (Carbon) | Power Bar | Audio Quad (Carbon) | Speaker Hex (Carbon) |
| Dimensions (H x W x D) | 16,5 × 46 × 40,5 cm |
| Weight | 14,5 kg |
| Finishes | Silver anodised aluminium (43), black anodised aluminium (42), brushed |
Actually we’re scientists….
Ever since 1978 our driving force has been curiosity. Our aim was to define the framework of the possible, and push its limits a little further each day, and that’s what formed the stone of this company. We always aspired to the creation of new findings rather than the exploitation of existing knowledge. We were determined to carve out our own advances, and not simply follow the progress of technology.
