Accuphase P – 4200 stereo

Planet Audio
Planet Audio
Planet Audio
Planet Audio
Planet Audio

U 2013. godini predstavljeno P-4200 stereo izlazno pojačalo uzdiže zvuk Accuphase integriranih pojačala na još viši nivo. Dodatno usavršena MCS+ topologija i princip strujne negativne povratne sprege, potisnuli su izobličenje i šum na apsolutno minimalnu vrijednost. Za svaki kanal upotrebljena su tri para robustnih tranzistora u paralelnoj push-pull konfiguraciji. Ulazni stupanj koristi princip preciznog instrumentacionog pojačivača koji omogućava simetričan transfer signala.

Superiorno napajanje sa predimenzioniranim transformatorom od 950VA dozvoljava stabilnost i snagu od 500 watta po kanalu na niskim otporima od 1 Oma. U bridge spoju moguća je pretvorba u mono pojačalo snage 1000 watta na 1 ohm. Daming factor poboljšan je sa 180 na 500.

The P-4200 is a stereo power amplifier that takes sophisticated sound to the next level. While inheriting design technology from highly renowned Accuphase models such as the P-7100 and M-6000, the new model features instrumentation amplifier topology and a refined MCS+ circuit to lower the noise floor even further. Only specially selected top-grade materials and parts are used throughout with impressive results.The overall configuration of the P-4100 employs the latest instrumentation amplifier principle, allowing fully balanced signal paths throughout. In addition, the power amplifier section features refined MCS+ topology in combination with current feedback, for further enhanced electrical performance characteristics.

  •  Output stage with 3-parallel push-pull configuration for each channel delivers high power   and handles very low impedance loads
  •  Instrumentation amplifier principle used for signal paths
  •  Further refined MCS+ circuit topology
  •  Current feedback circuit combines excellent sound quality with total operation stability
  •  Bridged connection mode allows upgrading to monophonic amplifier
  •  Massive toroidal transformer rated for 950 VA
  •  4-step gain control
Continuous Average Output Power (20-20,000 Hz) Stereo operation (both channels driven):500 watts per channel into 1 ohm 360 watts per channel into 2 ohms 180 watts per channel into 4 ohms 90 watts per channel into 8 ohms Monophonic operation (bridged connection):1,000 watts into 2 ohms720 watts into 4 ohms360 watts into 8 ohms
Total Harmonic Distortion Stereo operation (both channels driven):0.05% with 2 ohm load0.02% with 4 to 16 ohm load Monophonic operation (bridged connection):0.02% with 4 to 16 ohm load
Inter modulation Distortion 0.01%
Frequency Response At rated output: 20-20,000 Hz +0, –0.2 dBAt 1 watt output: 0.5-160,000 Hz +0, –3.0 dB
Gain 28.0 dB (with GAIN selector at MAX) (in stereo and monophonic operation)
Gain Selection MAX, –3 dB, –6 dB, –12 dB
Output Load impedance Stereo operation: 2 to 16 ohms Monophonic operation: 4 to 16 ohms
Damping Factor 500
Input Sensitivity (with 8-ohm load, GAIN selector in MAX position) Stereo operation:1.07 V for rated output0.11 V for 1 watt output Monophonic operation:2.14 V for rated output0.11 V for 1 watt output
Input Impedance Balanced: 40 kilohms Unbalanced: 20 kilohms
Signal-to-Noise Ratio (A-weighted, input shorted) 120 dB (GAIN selector at MAX)125 dB (GAIN selector at –12 dB)At rated output
Output Level Meters –50 dB to +3 dB (indication in dB and %)Logarithmic scale, with defeat switch
Power Requirements AC 120 V/230 V, 50/60 Hz(Voltage as indicated on rear panel)
Power consumption 60 watts idle550 watts in accordance with IEC 60065
Maximum Dimensions W 465 mm, H 190 mm, d 427 mm
Mass 28.2 kg net / 34.0 kg in shipping carton