The GA-8000 microphone is a tube microphone equipped with a semiconductor active cooling system that results in a higher signal-to-noise ratio compared to most other tube microphones. It has a very high-quality performance and modern sound character. The GA-8000 uses a ROGERS ceramic circuit board that has superior insulation parameters and offers a more stable performance. The coupling and bypass capacitors is of a very high quality, resulting in a deep and exact low frequency performance and a delicate and transparent high frequency reproduction. The semiconductor active cooling and external cooling system is used in the GA-8000 ensures that the GA-8000 has the highest possible signal-to-noise ratio. The tube (a 6AU6) is mounted in an aluminum casing, with the semiconductor cooling chip being attached to the bottom of the case. The temperature of the tube in the GA-8000 is the effectively kept down when the GA-8000 is in it´s working state, the heat generated by the tube is actively dissipated. The heat that the tube generates is transferred to the reverse side of the semiconductor and transferred to the effective outer aluminum alloy heat sink at the rear of the microphone. This heat sink will then dissipate the heat from semiconductor cooling chip to the air surrounding the GA-800G. PCB Board A ROGERS ceramic gold-plated circuit board is used. This type of circuit board is usually used in high-end aerospace communication products, the cost is about twenty (20!) times higher than an ordinary PCB board. Capsule A manufacturer with more than twenty years of microphone capsule production experience are producing a capsule that have a modern sound character. The capsule used in the GA-8000 can handle a high sound pressure level. Tube In order to ensure the tube will have a long life, we are using a NOS CIFTE 6AU6 tube from France, it has a maximum anode voltage rating of about 300V.