Press release, January 2008

Gregor Zielinsky Diplom Tonmeister and A&R Manager at Sennheiser electronic Gmbh & Co used AX24 at the Music Academy in Hannover. A reference recording was made with various MKH 8000 Sennheiser microphones, to be used for demonstration and evaluation purposes.

"The AX24 is one of the most transparent and musical converter - mic preamp I have ever worked with, and is ideal for evaluating the sonic details of our microphones". Mr. Zielinsky says.

AX24 was chosen after comparison with other converters types, due to its transparent, uncoloring and very musical sound. Additionally the phantom power circuit were ideal for supplying the needed power to the various Sennheiser microphones giving optimal performance.

The microphones under evaluation were MKH 800, MKH 800 Twin, MKH 8000 series mics and the recording was made in Pro Tools with a set-up of 24 channels of AX24 converters interfacing via MADI to the AX24 HD I/O.

Orhestra at the Music Academy in Hannover

The recording was made of an orchestra concerto at the Music Academy in Hannover, and was performed in cooperation with the Tschaikowski Conservatory of Moscow conducted by Eiji Ouethe with solist Puhan Wang.

The pieces played were:
Michael Glinka: Overture for Russia and Ludmilla,
Ludwig van Beethoven: Piano Concerto Nr. 3 c-minor op. 37, and
Johannes Brahms: 2. Symphony D-Dur op. 73

The recording will be available on CD and can be aquired by contacting Sennheiser or DAD.


Set-up details
25 channels were recorded via multicore to the control room (about 40-55 meters) directly into 3 DAD AX24 AD converters and a Pro Tools 192 I/O converter with PRE (for channel 25). The AX24s drove all microphones with phantom power and were controlled with DADman running on a MAC. The 3 AX24 were connected to Pro Tools via MADI trough DAD HD IO Pro Tools interface. The whole system was clocked by a Mutec iCLOCK. Word clock cabeling were made with Apogee wide eye 75Ohm BNC cables, and monitoring through K&H O110 monitors. The session was done in 44.1 kHz 24 Bit .wav format.








A look in to the rack with
3 AX24 hokked up to Protools via
the HD IO Protools interface