Jazz-FF - Made in Germany (Special Order Only)
Overview
This amplifier may use a relatively simple (but sturdy) enclosure but at the inside it offers many technological ingredients not found in any other headphone amplifier in this price-range.
The JAZZ-FF not only uses the concept of active balanced ground but also has a discrete volume control (32 positions, two gain settings).
Tis volume control is technically very sophisticated. The position of the potentiometer is measured with the use of an AD-converter. The output of this converter is then used to set the proper volume level with a number of electronic switches. There are a total of 32 levels which allows for sufficient small stepsizes and a very analog feeling. The advantages are strongly reduced channel-imbalances and a much cleaner and more detailed sound.
Of course this amp also has our proprietary crossfeed filter incorporated which helps to strongly reduce listening fatigue.
The application of the FF-technique results in an extremely high level of micro-detail without any harshness. Sound is smooth and silky and this amp is especially recommended for acustical music (classic, jazz, ...)
Specifications
- Output impedance < 0,1 ohm
- Maximum output current 300 mA.
- Maximum output voltage JAZZ 3.7 V
- Maximum output voltage JAZZ-FF 15 V @ 200 Hz
- Discrete volume control. Typical stepsize 1.4 dB, 31 steps.
- Gain switch. Maximum gain factors +0 / +16 dB
- Crossfeed filter switch:
- 1. Stereo / crossfeed OFF
- 2. Crossfeed ON
- 1 pair of analog inputs
- Input impedance 18 kOhm
- Gold-plated input jacks.
- Silver plated headphone jack (Neutrik).
- Silver plated heavy duty switches
- 10 Watts toroidal transformer.
- 110V and 220V mains power switchable.
- Power uptake 5 Watts
- Built-in groundloop breaker.
- Double regulated voltage lines.
- Low impedance electrolytic buffer capacitors (Nichicon). Total Buffer capacity 39.000 uF.
- Bypass capacitors in the power supply.
- Polystyrol and polypropylen capacitors in the signal path.
- Metalfilm resistors in the signal path.
- OPA209 opamps biased into class-A.
- A total of 4 BURR-BROWN BUF634 buffer amplifiers at the left, the right, and the ground output channel.
- Active balanced headphone ground.
- Signal paths and signal path components at the bottom side of the PCB for maximal shielding.
- Sturdy anodized aluminium enclosure
- Weight: 1.0 kg
- Size: 22.2 x 10.6 x 6.0 cm
