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Golden Age Premier GA-47 MKII Classic Tube Microphone |
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Golden Age Premier GA-47 MKII Classic Tube Microphone The Golden Age Premier GA-47 MKII has been born from a lot of hard work and real world testing and the MKII version has been further refined. The end result is a microphone with a very sweet character that should appeal to a great number of users and a microphone that can be used for the most demanding recording tasks. It has proved itself to be a great all rounder, this is not a “vocal-only” microphone. The
GA-47 MKII is not a product that will be built in huge quantities on a big
assembly line. It´s a product that is built by hand, fifty units at a
time in a small workshop by skilled and dedicated staff. I believe
that the level of quality and dedication that the GA-47 MKII provides, would normally
come at a very high cost, in the world of U-47 clones. To make it
available to many more users, we have decided to sell the GA-47 MKII at a very competitive price point.
GA-47 MKII build info
The grille, which is a critical component affecting the sound character, is similar to the one in the Neumann U47. The capsule for the GA-47 MKII is designed to provide the requirements of modern day recordings by mixing the character between a vintage K47 capsule and one from a K67-style capsule with a wide frequency response and high sensitivity. The result is a truly great sound. Being a dual-sided capsule, it provides the GA-47 with both cardioid and omni polar patterns. In order to get a good consistency between units, for each production run of fifty GA-47 microphones, approximately 200 capsules are evaluated in order to find 50 with specifications that lie within the tight tolerances. Features: * Backplate material: brass TUBE The GA-47 MKII uses a NOS Telefunken 800 series super low noise pentode tube connected in triode mode in order to decrease distortion and noise. This tube is a modern glass derivative of the VF14M used in the vintage U-47. OUTPUT TRANSFORMER The GA-47 MKII is designed with a 6.5:1 dual bobbin transformer by a reputed transformer factory. It is a replica of the BV8 transformer used in the vintage Neumann U47. It uses a high quality core material. CAPACITORS & RESISTORS The coupling capacitor is made in the United Kingdom, the brand is Ciarit, the same type used in the famous and very expensive B&W Nautilus loudspeaker. It is an axial capacitor made from MKP material with copper pins. It has a delicate, full sound and wide frequency response. Other used capacitors are MIAL polystyrene film types with very low loss. The resistors are ALLEN BRADLEY carbon film made in the USA with a vintage warm sound. MIC INTERIOR & CABLING The electronic circuit is built with point-to point wiring on an expensive Rogers circuit board. Teflon insulated, silver plated copper wire is used for the internal connections. POWER SUPPLY The vintage style power supply uses a high power R-style transformer with a low noise level and minimal stray field. The electrolytic capacitors are of a high quality audio style type. A simple but effective circuit uses dual-stage filtering for the filament voltage. The high voltage is precisely filtered and stabilized using an ON semiconductor zener diode. A -10 dB PAD switch on the power supply for high SPL instrument recordings like kick drum MIC CABLE The cable is specially produced using 99,99% pure oxygen-free copper,
teflon insulation, tin foil and 98% kitmesh, producing a high density cable
shield. It has a very open and smooth sound. COMPARISONS TO NEUMANN U-47 MIC The circuit used in the GA-47 MKII is similar to the U-47 but the component
values have been adjusted to accommodate the EF800 tube. Specifications Frequency Response: 20Hz〜20KHz The GA-47 MKII is housed in a alluminium flight case with power supply, mic to psu cable (black, not red as shown in picture) shock mount and wooden box for the microphone.
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