Firestone Cute Beyond

Products > Headphones > Amplifiers

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The Cute beyond Headphone class A Amplifier is the latest and the last of the Cute family. It is optimized for a wide range of load impedances, suitable almost all the headphones from ER4P (27 ohm) to AKG K240DF (600 ohm). This high bandwidth, extreme low noise design (lower than -107db) yields greater than 105 dB of dynamic range and exceeds the capabilities of the human ear, ensuring to handle any difficult headphones.

Two gain settings, selectable by a convenient front panel switch, allow for quick and easy optimization for high or low efficiency headphones. With user changeable opamps and Shunt/Series type input volume control to suit different tastes.

Other features include Short Circuit, Thermal protection, and external AC100~240V switch power supply.

Specifications:
- OPA2227 for main amplifier, current boosters made by NPN/PNP power transistors
- Class A amplifier
- Extra low output resistance ( Zo < 0.05 ohms),high current capacity ( 200mA per channel)
- 6Hz~300Khz ,-1dB at 100 ohms loading,very low noise
- Max. output 6Vrms ( 24VDC adaptor), internal gain control switch ( Low/High ),easy to match 8 to 600 ohms headphones
- Volume control free to switch to Series or Shunt ( for more sensitivity) type
- OP amplifiers exchangeable! You can tune the tone by yourself
- "Anti-dummy" power supply protection A110V/220V auto-switching adaptor
- Size: 11cm(L) X 8cm(W) X 5cm(H)
- Weight: 500g
- Colors: Red, Blue, Gray, Purple(Violet)




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