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Усилвател Parasound Zamp Zone Amplifier → Обява 52410281
Усилвател Parasound Zamp Zone Amplifier
Състояние
Използвано
Доставка
Лично предаване; Купувача
Тежък,малък аудиофилски усилвател Parasound Zamp Zone Amplifier,перфектен визуално, и като работа.
Крайнa цена.
Последната снимка е от интернет.
FEATURES:
- 30 watts per channel into 8 Ω, less than 0.03% THD
- 45 watts per channel into 4 Ω, 75 watts bridged into 8 Ω mono
- 200 VA Toroid power transformer, 8,800 �F power supply filter capacitance
- Gain controls and bridge switch on rear panel
- Fully discrete direct coupled design, DC servo control
- Headphone jack
- LED indicators for AC present and operating mode
- 12 volt DC auto turn-on trigger circuitry
- Audio trigger with adjustable sensitivity
- Ground lift switch
- Looping line output connectors
- 9 1/2" width front panel
- Gold-plated RCA jacks
- Gold-plated 5 way speaker terminals
- 1 rack space height front panel
- Two unit fastening hardware available for side-by-side rack mounting
SPECIFICATIONS
- Continuous Power Output - Stereo:30 watts RMS x 2, 20 Hz - 20 kHz, 8 Ω, both channels driven;45 watts RMS x 2, 20 Hz - 20 kHz, 4 Ω, both channels driven
- Continuous Power Output - Mono:75 watts RMS, 20 Hz - 20 kHz, 8 Ω, minimum impedance
- Current Capacity:12 amperes peak per channel
- Slew Rate:> 80 V/�second
- Frequency Response:5 Hz - 100 kHz, +0/-3 dB at 1 watt
- Total Harmonic Distortion:< 0.06 % at full power; < 0.01 % typical levels
- IM Distortion:< 0.04 %
- TIM:unmeasurable
- Dynamic Headroom:> 1.5 dB
- lnterchannel Crosstalk:> 80 dB at 1 kHz; > 60 dB at 20 kHz
- Impedance:33 k Ω
- Input Sensitivity:1 V
- S/N Ratio:> 100 dB, full output Damping Factor: > 200 at 20 Hz
- Dimensions:w 9 1/2" x h 1 3/4" x d 7", h 2 3/8" with feet
- Net Weight:6 lb.
FAQ
- The Zamp is so cute. Is it a serious amplifer?
Why yes, it is! The Zamp incorporates a lot of the same technology that make all our amplifiers great. Torroidal transformers, discrete components, JFET inputs, BiPolar outputs, and high quality parts throughout.
The SkyFi Testing Process for Solid State Amplifiers:
We start with a visual inspection of all internal components to make sure there are no signs of stress or aging. Capacitors are checked for telltale sings of bulging or leaking, resistors are checked for signs of overheating or cracking, and transistors are checked for signs of stress or damage.
We then power up the unit carefully and run a simple 1k sine wave while monitoring the output on an oscilloscope for signs of distortion or noise. Finally, we run the amplifier to its full rated power into the appropriate resistive load provided by our Sencore amplifier tester. If there is an issue, it will usually be noticeable at this point. If everything reads clean, we will often test for THD (Total Harmonic Distortion) measured by our Keithley distortion meter, and compare it against the original manufacturers specifications. The amplifier then remains powered on to "burn in" on our test bench for a few hours to make sure there are no heat related issues. If there are balanced inputs available they will be also be tested.
Final testing involves pushing actual music thorough the amplifier. We've learned over time that some issues are only noticeable to a trained ear while listening to familiar source material. Our test bench has reference vintage KEF speakers that we're very familiar with which quickly reveal any discrepancies. Some amplifiers will then move into our listening room where they are tested with our in-house reference speakers of choice.
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