Ideal as a creative tool for professional vocal recording applications in studios, the Gyraf Audio GY 4.5 Signature Inherit Cartridge from GC Audio is a fully tube-powered microphone preamp designed for use with the modular Inherit mic preamp system. Providing a preamp circuit based on the Jakob Erland-designed Gyraf Audio Gyratec 9 preamp, the Gyraf Signature cartridge delivers a versatile sound character, from clean to very colorful.

This single-channel preamp cartridge is built around two high-voltage 12AU7 / ECC82 vacuum tubes, with no solid-state components in the signal path for a pure tube tone. The I/O is balanced by high-end Lundahl transformers. The most crucial aspect of this circuit is its slow transition to overload, allowing for a very large so-called sweet spot that offers dense analog saturation without distortion. When loaded into an Inherit rack chassis, the onboard pad provides -28 dB of attenuation for reining in overly hot signals. Preamp gain is stepped, with 12 steps for gain control from 22 to 63 dB.

Genuine Tube Preamp for Inherit System    Based on Gyratec 9 by Jakob Erland    Ideal for Vocals    Two High-Voltage 12AU7 / ECC82 Tubes    Balanced I/O with Lundahl Transformers    From Clean to Colorful Sound    Slow Transition to Overload    Dense Saturation without Distortion    -28 dB Attenuation Pad

The Gyraf Signature cartridge is based on a now classic design by Jakob Erland, founder of Gyraf Audio and designer of many high-end studio devices, like the G9 preamp and G22 compressor. Jakob Erland is widely recognized as one of the leading experts in tube hardware design.

The design is faithful to the original Gyratec 9 preamp in every detail, including the use of ECC82 tubes, while sporting some new enhancements, such as transformer balancing, phantom power, switchable high-pass filters, and stepped gain control. The G9, which was adapted for this cartridge, is itself based on the input circuit of the vintage G36 tape recorder.

A welcome feature of the Gyraf Signature cartridge for pro engineers is stepped gain control, which is provided in 12 steps:

• 1 = 22 dB
• 2 = 26 dB
• 3 = 32 dB
• 4 = 37 dB
• 5 = 42 dB
• 6 = 46 dB
• 7 = 49 dB
• 8 = 52 dB
• 9 = 56 dB
• 10 = 59 dB
• 11 = 61 dB
• 12 = 63 dB

Related Questions and Answers

Q: 1. What are the interior and exterior dimensions of the GC-11? PentaxRumors shows pic where GC-9 will just barely fit the GR iii, so I wonder if the GC-11 is thick enough for the Sony RX100 III, which is 4 x 2.37 x 1.63"?

A: the Ricoh GC-11 Soft Case is designed to hold the Ricoh GR III and Ricoh GR IIIx Digital Cameras. The larger GR IIIx which is a tighter fit in the case is 4.3 x 2.4 x 1.4". With the Sony Cyber-shot DSC-RX100 III Digital Camera being a thicker camera at a bit over 1.6" in depth, this case would not be a good fit.

Q: 2. Will this fit the GR II?

A: Yes.

Q: 3. Does this camera ship with the updated firmware that allows for 120FPS recording? Or will I have to update it manually?

A: Unfortunately we do not have access to our inventory to be able to inspect the camera and the firmware version installed on it. It is not uncommon that from the time a camera leaves the manufacturer overseas and then arrives to the customer that a new firmware version may be released. Firmware updates are posted on manufacturers websites and are easy to perform. We always recommend that when receiving a new model camera, to check its firmware version to the most recent version posted on the manufacturers website.

Q: 4. Is 48 volt phantom power available on the XLR microphoneconnectors?

A: When I found the complete Operation Manual it confirmed that phantom power was an option on the handle control panel. Many thanks to all who responded.

Q: 5. Is it possible to change the battery while recording? Suppose one wants to use batteries only for a long running event and only plug in before changing the battery and unplug afterwards? Is that possible?

A: Yes. You can plug in an external 12V power supply or battery while changing the onboard battery,

Q: 6. is the lens interchangeable?

A: no no no

Q: 7. The specs for this camera say that you can record in HD 4:2:2 (.MOV) format. I have read somewhere that the .MOV format from this camera can only be edited with Final Cut Pro on an Apple Mac, i.e. you cannot use a Windows based editing software. How true is that?

A: I have been working on this problem for a few weeks or so and finally have a inexpensive WINDOWS 7 - UP NLE solution to the 4.2.2 .mov File format issue - THE ANSWER IS ... MAGIX 2016 Movie Edit Pro (get the Plus version) this software works with the 4K files and the 4.2.2 .mov format as well. What you need to know is as follows, the software is so affordable it should be illegal so no issue there - and it's powerful with tons of features not documented - have no ans why that is but it's worth the effort to learn the software - here's the catch - after you install and activate the software you need to install the free - optional codecs - under the Help heading select - install extra content - and select the 2 additional codecs - MC MPEG2 and MC MPEG4 - the latter you need to decode the 4.2.2 .mov files from this camera - restart the software and it will utilize any of the JVC files. Works great and has a very good render engine so outputs are sharp and clean.

Q: 8. How do you replace the CR 2025 battery?

A: This camcorder uses a JVC BN-style battery.

Q: 9. Does it have a headphones output?

A: Yes. It's on the back.

Q: 10. Is the Standard Def format in 4: or 16:9?

A: 16:9