FREDENSTEIN F610 UE1 Digital Stereo Equalizer

Digital Stereo Equalizer

The FREDENSTEIN F610 UE1 (Universal Entzerrer) is a digitally controlled analog stereo quad equalizer and 30-band spectrum analyzer in a double-width 500 series cassette.
For the first time in a 500 series module, FREDENSTEIN has been able to implement a high-resolution 3.5" color LCD display including a capacitive touch controller, thus bringing the 500 series into the 21st century.
The four filters are all identical and each can be tuned from 20 Hz to 20 KHz. The rotary encoder frequency knob allows access to approximately 190 different frequencies per filter, while the USB interface allows a frequency resolution of 1 Hz. The maximum filter gain is +/- 16 dB. In case more gain is needed, additional filters can be set at the same frequency for a ridiculous boost or cut up to 64 dB. The Q factor of each filter can vary from 0.4 to 7.9. The gain can be adjusted from -16 dB to +16 dB in 0.25 dB increments, clearly meeting the demands of modern sophisticated mastering. Filter characteristic 1 can be changed from band-pass to low-shelf and filter 4 to high-shelf.
In addition, a variable second-order low-cut filter with a range from 20 Hz to 975 Hz is provided, as well as a "Color" function that provides a tube-like sound. The hard-bypass allows for quick evaluation of the EQ effect.
The 30-band spectrum analyzer features a 60 dB dynamic range with selectable sensitivity from +6 dBu to +24 dBu in 6 dB steps. The choice of feeding the input or output signal to the analyzer adds to the versatility of the F610.
Up to 99 complete settings can be stored in the internal non-volatile memory, and a Micro-USB interface provides full control from a host computer connected via RS232 over USB.
The name FREDENSTEIN F610 UE1 is a tribute to the classic K&H UE-100. "Entzerrer" is the German technical term for equalizer.

Specifications

• 4-band equalizer with variable Q
• High-resolution 3.5-inch color LCD capacitive touch-controller display
• 30-band spectrum analyzer
• Each band with a gain/reduction of ±16 dB and a variable Q from 0.9 to 7.9
• Filters 1 and 4 can switch from bandpass to low shelving and high shelving, respectively
• Variable 2nd order high-pass filter with a function range from 20 Hz to 600 Hz
• Color function that imparts a tube-like flavor
• Hard-bypass for quick comparison between wet and dry signals
• Frequency response: 10Hz-30,000Hz at -0.5 dB / 6Hz-60,000 Hz at -3 dB
• Distortion (THD & N): <0.004% at output level +24 dBu
• Signal to Noise (S/N): -106 dB at output level +26 dB
• Crosstalk at 10 kHz: <-102 dB
• Max. Input Level: +26 dBu
• Max. Output Level: +27 dBu
• Input Impedance: 20 kOhm (electronically balanced)
• Output Impedance: 44 ohm (electronically balanced)
• Power Consumption: +16V Rail <400 mA / -16V Rail <350 mA