The Restoration Center for Audio Archives

The digital transfer of tape archives or sonic restoration for commercial release requires precision, care and accuracy.

Airshow is the music studio provider of analog master tape transfer for Plangent Processes restoration services. Plangent processing brings unprecedented clarity and increased image depth and focus to master tapes using a proprietary technology to remove wow, flutter and other speed perturbations. We’ve written about the method here.

Some of the most cherished reissues of recent years been restored at Airshow, including the GRAMMY-winning collections “The Anthology of American Folk Music” and “Screamin’ and Hollerin’ the Blues: the Worlds of Charley Patton.” Audio restoration – the nuanced, detailed application of noise reduction processes, click and pop removal, and distortion reduction – contributes clarity to releases of archival and historic material.

The Restoration Center is a suite of services to help cultural heritage institutions and record labels to digitize analog audio archives and make them accessible electronically. Digitization services include real-time transfer from cassette, disc, any open-reel tape format, and PCM and DAT digital sources. After digital conversion, files can be post-processed to enhance listenability for scholars or to a commercial standard for use in exhibits or release.

Archivists are welcome to send or bring a box of media and participate in a Discovery Day. Prospective Restoration Center clients are welcome to contact Ann Blonston in Boulder to discuss their project: 303-247-9035.

Playback Recorders
Studer A820
Ampex ATR 104
(Headstacks for 1/4” full track, quarter track, NAB & DIN 2 track; 1/2” 2, 3, and 4 track playback. 1” 2 Track on request. Choice of replay electronics, including Plangent Processes)
Tascam & Nakamichi cassette decks
Sony PCM-7030 and Tascam DA-45 DAT recorders
Tascam DA-98 DSD recorder, DA-88 compatible
Sony PCM-1630 system
Sony PCM-601 F1 format system
Pro-Ject Xtension 10 Evolution turntable

NHT M-20 monitors and Grado headphones

Restoration Tools
Sonic Studio soundBlade w/ NoNoise and Spectral Repair
iZotope RX6 audio restoration suite
iZotope Ozone 8

Pacific Microsonics HDCD Model 2
Pacific Microsonics HDCD Model 1
Prismsound ADA-8XR 8 channel PCM & DSD converter
Ayre AD9 PCM & DSD A/D converter
Meitner 8 channel PCM/DSD converter
Mytek Brooklyn MQA D/A
Mytek 8×192 8 channel PCM/DSD converter
Lavry dB-4496

Please tell us a little about yourself if you'd like us to contact you about rates and scheduling. You are also welcome to call us at 303-247-9035 at any time.

  • Project information

    Share as much information as you can about your project so we can be prepared to help.