RARE FIRESTONE AUDIO CUTE BEYOND JRC 5532D OPAMPS CLASS A HEADPHONE AMPLIFIER

Hi everyone,You are looking at the VERY RARE FIRESTONE AUDIO CUTE BEYOND UPGRADED CLASS A COMPACT DESKTOP HEADPHONE AMP AMPLIFIER. In very good working condition, this is not designed to power and drive Planar magnetic headphones. Upgrades:2x JRC 5532D dual type opamps,better 24V DC power supply,new thermal paste. 1 input: 2x RCA.1 output: 3.5mm headphone. It comes with:the original box,a 3.5mm to 6.3mm tail adapter. Item will be dispatched after payment clears, usually 2-3 working days.Free Royal Mail Special Next Business Day delivery, sent via Parcelforce 24 hour delivery if over 2KG.No collection possible, I also update the tracking details after dispatch.Please check out my other items I may have for sale, thanks for looking : )Genuine buyers only otherwise you will be reported to the authorities. I will make a note of the serial number for security purposes.Firestone Audio Cute Beyond headphone amplifier Features: The Cute Beyond has the power switch and 2 position gain switch on the rear, along with the 24V DC input and a pair of single ended RCA inputs. On the front is the power-on light, 3.5mm headphone jack and volume control. * Volume control internal switch for Series or Shunt (adjust to suit your taste)* OP amplifiers exchangeable! You can tune the sound if needed* 100 - 240Vac 50/60 Hz external auto-switching power supply included* External gain switch make it easy to match low or high impedance headphones* Short circuit and thermal protection It is optimised for a wide range of load impedances from the Etymotic ER4P (27 ohm) to the AKG K240DF (600 ohm). This high bandwidth, extremely low noise design (lower than -107db) yields greater than 105 dB of dynamic range. The 2 way rear gain switch is actually an attenuator (-20dB at the low setting, no attenuation at the high setting). Specifications. * Circuit Design: OPA2227 for main amplifier, current boosters NPN/PNP power transistors* Design: Class A amplifier* Output Resistance: Extra low output resistance (Zo - 0.05 ohms), high current capacity* Frequency Response: 6Hz~300Khz ,-1dB at 100 ohms loading, very low noise* Max. output: 6V rms (with 24V DC Power Supply)* Headphone Impedance: 8 - 600 Ohms (See headphone matching chart for additional information)* Size: Size: 11cm/4.3in(L) x 8cm/3.2in(W) x 5cm/2.0in(H)* Weight: 500g / 17.6oz