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Parasound A-21+ (Schwarz)
2x300W 2 Kanal Endverstärker
2 Kanal Endverstärker, 2x 300W/500W RMS 8Ω/4Ω, mono 1000W RMS, vollsymmetrisch; BxHxT: 448x197x508mm
Farbe Schwarz
Versand: lagernd
Geschäft: 2-4 Tage
4.398,00 € / Stk.
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+43(0)1 6982317 +
Produktberatung per Mail +
Installations- und Lieferservice +
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mehr als 16 Jahre Erfahrung +
+43(0)1 6982317 +
Produktberatung per Mail +
Installations- und Lieferservice +
Hilfestellung bei Garantieabwicklung +
mehr als 16 Jahre Erfahrung +
Changes from the original A 21→A 21+
- 250 → 300 Watts (8Ω)
- 400 → 500 Watts (4Ω)
- 750 → 1000 Watts (bridged)
- Filter cap: 88,000 uF → 108,000 uF
- S/N: 112dB → 115 dB
- THD (at full power): 0.2% → 0.1%
- Crosstalk (20kHz): 63dB → 70dB
- Transformer size: 1.2 kVA → 1.3 kVA
- Weight: 60 LB → 71 LB
- Refined Halo cosmetic with aluminum end caps & gold highlights
- Updated rear panel with heavy duty speaker terminals from JC 5
- Upgraded internal gold on gold audio connections
- Updated auto turn on circuit
All Features
- 300 watts x 2 @ 8 Ω RMS, both channels driven
- 500 watts x 2 @ 4 Ω RMS, both channels driven
- 1000 watts x 1 @ 8 Ω, in bridged mode
- Circuitry designed by legendary John Curl
- High bias Class A/AB operation
- 60 amperes peak current per channel
- Stable with speaker impedance dips to 1.5 Ω
- Balanced inputs with discrete circuits
- CHK Infinium, custom 5-way speaker binding posts
- Gold-plated RCA input & loop output jacks
- Direct-coupled signal path, no capacitors or inductors
- DC Servo and relay protection circuits
- AC turn-on inrush surge protection with relay bypass
- JFET input stage, MOSFET driver stage
- 16 beta-matched 15 ampere, 60 MHz bipolar output transistors
- 1.3 kVA shielded toroid transformer w/ independent windings for each channel
- Independent power supplies for input stage, driver stage and output stage
- 108,000 µF filter capacitors for output stages
- Full power is rated all the way down to 5Hz for unrestricted low-end bass
- Harris hyper-fast soft-recovery bridge diode rectifiers
- Automatic turn-on by 12 V trigger or audio sensing
- 4 rack space chassis with rear carry handles
- Rack mount hardware is included
- Available in silver or black
Power Output – Stereo Mode (0.1% THD) | 300 watts x 2, 8 Ω both channels driven |
Power Output – Stereo Mode (0.1% THD) | 500 watts x 2, 4 Ω both channels driven |
Power Output – Bridged Mode (0.1% THD) | 1000 watts x 1, 8 Ω |
Power Output – Bridged Mode (0.1% THD) | Bridged 4 Ω operation is not recommended |
Power Output – Bridged Mode (0.1% THD) | Power measurement are at 120 VAC: |
Power Output – Bridged Mode (0.1% THD) | 0.1% THD, RMS continuous power, |
Power Output – Bridged Mode (0.1% THD) | full audio band (20 Hz - 20 kHz) |
Current Capacity | 60 amps peak, per channel |
Slew Rate | > 130 volts per microsecond |
Frequency Response | 5 Hz - 100 kHz, +0/-3 dB |
Frequency Response | 20 Hz - 20 kHz, +0/-0.25 dB |
Total Harmonic Distortion (THD) | < 0.1 % at full power |
Total Harmonic Distortion (THD) | < 0.03 % at typical listening levels |
IM Distortion | < 0.04 % |
TIM | Unmeasurable |
Inter-channel Crosstalk | > 80 dB at 1 kHz |
Inter-channel Crosstalk | > 70 dB at 20 kHz |
Input Impedance | Unbalanced: 33 kΩ |
Input Impedance | Balanced: 66 kΩ,(33 kΩ per leg) |
Total Gain | 29 dB |
Input Sensitivity for 28.28 V Output into 8 Ω | Unbalanced: 1 V |
Input Sensitivity for 28.28 V Output into 8 Ω | Balanced: 1 V per leg |
S/N Ratio | > 115 dB, input shorted, IHF A-weighted |
S/N Ratio | > 110 dB, input shorted, unweighted |
Damping Factor | > 1100 at 20 Hz |
DC Trigger Requirements | +9 Vdc to +12 Vdc, 5 mA |
Audio Trigger Requirements | 2 mV - 10 mV |
XLR Pin Identification | 1 = Ground (Shield) |
XLR Pin Identification | 2 = Positive |
XLR Pin Identification | 3 = Negative (Return) |
Dimensions | Width: 17-5/8" (448 mm) |
Dimensions | Height without feet: 7-1/8" (181 mm) |
Dimensions | Height with feet: 7-3/4" " (197 mm) |
Dimensions | Depth: 20" (508 mm) |
Dimensions | Depth with cables: 21-1/2" (546 mm) |
Net Weight | 71 lb. (32.2 kg) |
Shipping Weight | 88 lb. (39.9 kg) |
Power Requirement | Standby: 1 Watt |
Power Requirement | Idle (no music playing): 160 Watts |
Power Requirement | Typical Listening levels: 300 Watts |
Power Requirement | Maximum: 1400 Watts |