The Opamps - ADK stock opamp, Avedis 1122, Millennia MM-990, Forssell 992, Forssell 993, API 2520 (1999), API 2520 (Vintage made in Huntington, NY)

The Transformers - ADK Crimson, Jensen JT-110K-HPC, Lundahl LL 1538XL, Sowter Type 9820c, Cinemag CMMI-8PCA.

Recorded on September 5, 2005

Produced by Dan Richards
Engineered by Brian McKenzie, Dan Richards

Recorded at The Lazy I Studios
Edited at TLS HQ

Acoustic guitar played by Tommy Tipton
Bass played by Patrick O'Leary

Special thanks to:
Avedis - Brent Averill
Peter Cornell - Bizzar Pro/Vintage Audio-DIY
Jon Erickson - Helsing Audio
Fred Forssell - Forssell Technologies
John Hardy - John Hardy Co.
John LaGrou - Millennia Media
Larry Villella - ADK Microphones / ADK Custom Shop


Session Notes: A couple of years ago we started playing around with swapping out 2520/2510/990-type 5-pin opamps in an API 3124 mic preamp. When the ADK Custom Shop AP-1 entered production — with not only swappable opamps capabilities but also swappable transformers — we thought this would be a good time to do some testing and post some sound files. The sound files in this Session 9 are 16-bit WAV files.

All WAV files are named systematically as source.opamp.trans.wav

The purpose of this session is to listen to the different relative qualities of various opamps and transformer combinations in an ADK Custom Shop AP-1 mic preamp. The signal path is minimal and there was no dynamic processing — no EQ, compression or limiting — of any kind used on these tracks.

Session 9 is also a sound file companion for an upcoming review of the ADK AP-1 mic preamp for Studio Reviews.

A note of caution: Be very careful with the volume — especially on the bass tracks — on your monitors! You are essentially getting the same signal from these sound clips as you would from plugging a bass directly into your system. Please start at a low volume, and then raise as desired and as is safe for your monitoring system. We assume no responsibility for any damage these files may cause to your sound system or to your relationship with your neighbors.

Talk about it in the Session 9 topic and the ADK AP-1 topic at Studio Forums.

Enjoy! - DR - "Dot"



The signal chain for these recordings:

Acoustic Guitar -- AKG C414 TLII ADK AP-1 mic pre -- Tango 2 AD -- SAW Studio --- edited with BIAS Peak 4
Bass Guitar -- ADK AP-1 DI -- Tango 2 AD -- SAW Studio --- edited with BIAS Peak 4

If table contents do not line up, widen your browser window.
Click here for printer-friendly track sheet
    

Track 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28

Mic Preamp ADK opamp w/ Cinemag trans ADK opamp w/ Cinemag trans ADK opamp w/ Crimson trans ADK opamp w/ Crimson trans ADK opamp w/ Jensen trans ADK opamp w/ Jensen trans ADK opamp w/ Lundahl trans ADK opamp w/ Lundahl trans ADK opamp w/ Sowter trans ADK opamp w/ Sowter trans Forssell 992 opamp w/ Cinemag trans Forssell 992 opamp w/ Cinemag trans Forssell 993 opamp w/ Cinemag trans Forssell 993 opamp w/ Cinemag trans API Vintage 2520 opamp w/ Cinemag trans API Vintage 2520 opamp w/ Cinemag trans API Vintage 2520 opamp w/ Lundahl trans API Vintage 2520 opamp w/ Lundahl trans API Vintage 2520 opamp w/ Sowter trans API Vintage 2520 opamp w/ Sowter trans Avedis 1122 opamp w/ Cinemag trans Avedis 1122 opamp w/ Cinemag trans API 1999 2520 opamp w/ Cinemag trans API 1999 2520 opamp w/ Cinemag trans Avedis 1122 opamp w/ Lundahl trans Millennia MM-990 opamp w/ Jensen trans Forssell 992 opamp w/ Jensen trans Avedis 1122 opamp w/ Jensen trans

Source Acoustic Guitar Bass Acoustic Guitar Bass Acoustic Guitar Bass Acoustic Guitar Bass Acoustic Guitar Bass Acoustic Guitar Bass Acoustic Guitar Bass Acoustic Guitar Bass Acoustic Guitar Bass Acoustic Guitar Bass Acoustic Guitar Bass Acoustic Guitar Bass Bass Bass Bass Bass

WAV Files Track 1 Track 2 Track 3 Track 4 Track 5 Track 6 Track 7 Track 8 Track 9 Track 10 Track 11 Track 12 Track 13 Track 14 Track 15 Track 16 Track 17 Track 18 Track 19 Track 20 Track 21 Track 22 Track 23 Track 24 Track 25 Track 26 Track 27 Track 28

       

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