Gyraf Audio G14-S

£4,199.00 £3,499.17
Hitachi PaybyFinance
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Cash Price £2500, Deposit £500, Loan amount £2000, 9.9% APR representative, Interest rate 9.9% p.a. fixed, 24 monthly repayments of £91.81, Total term of loan agreement 24 months, Total Amount payable £2703.44.
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Passive stereo Equaliser with 5 parallel bands and a choice of Tube/passive or solid-state make up gain and interfacing topologies.

At a glance

  • Input impedance – around 5K Ohms, transformer balanced or 24K Ohms Servo/ differential receiver balanced input
  • Output impedance – ~1K Ohms, transformer balanced or ~100 Ohms, active servo balanced
  • Make-up gain Amplification by 6n23p/E88CC tube stage or contemporary op amp circuit
  • Max boost/cut – ~10-12dB, depending on “Q” setting
  • Gain trim ~+3 – -5dB – unity gain somewhere between 12:00 and 14:00, depending on tube matching point
  • Each of the five bands are individually hard-bypassable (on the “MODE” control)
  • Channel tracking better than ~1dB

The Gyraf Audio G14-S is a passive stereo Equaliser with 5 parallel bands and a choice of Tube/passive or solid-state makeup gain and interfacing topologies.

The Gyraf Audio G14-S boasts five parallel bands each with a selection of 11 frequencies, continuous variable Q and a choice of boost, cut or bypass modes. The Q's sharpness differs when boosted or cut, with broad Q at boost and higher at cut, almost verging on the notch at the highest cut setting. 

Special attention has been brought to the choice of frequencies especially in the mid-range which includes a wide frequency overlap between each band.

The Gyraf G14-S uses a truly passive design with inductors and capacitors being switched in or out of the circuit and each passive filter set is matched with input and output interfacing before reaching the gain stage to compensate for the approximate loss of 20dB in the filters.

In the original G14, the gain state was achieved using 6H23n tubes combined with transformer balanced input and outputs giving it a rich tone. The G14-S has kept the original design and added a separate path using a high-grade op-amp with integrated balanced receivers on the input and a state-of-the-art active servo balancing circuit on the output. This offers a cleaner tighter sound. Each mode is easily accessed via a three-position switch giving the choice between In (Valves and transformers), Bypass (No EQ) and S (Op-amp).

More Information
Short DescriptionPassive stereo Equaliser with 5 parallel bands and a choice of Tube/passive or solid-state make up gain and interfacing topologies.
AT A GLANCE
  • Input impedance – around 5K Ohms, transformer balanced or 24K Ohms Servo/ differential receiver balanced input
  • Output impedance – ~1K Ohms, transformer balanced or ~100 Ohms, active servo balanced
  • Make-up gain Amplification by 6n23p/E88CC tube stage or contemporary op amp circuit
  • Max boost/cut – ~10-12dB, depending on “Q” setting
  • Gain trim ~+3 – -5dB – unity gain somewhere between 12:00 and 14:00, depending on tube matching point
  • Each of the five bands are individually hard-bypassable (on the “MODE” control)
  • Channel tracking better than ~1dB
Demo in StoreNo
ManufacturerGyraf Audio
Valve / Solid StateHybrid Valve/Solid State
High Frequency Range4K5-5K6-6K5-7K8-9K1-12K-14K-16K-18K-20K-22KHz
High Mid Frequency Range950-1K2-1K4-1K7-2K-2K5-3K-3K5-4K2-5K-6K3 Hz
Mid Frequency Range500-570-700-800-900-1K-1K1-1K3-1K5-1K8-2K1 Hz
Low Mid Frequency Range180-230-280-330-400-430-490-550-590-650-750Hz
Low Frequency Range35-48-60-70-80-100-120-160-190-220-270Hz
BypassNo
Channel CountDual Channel
ChassisRackmount
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