UAD Powered Plug-Ins Manual Ampex ATR-102 Mastering Tape Recorder 19
History
Introduced in 1976, the Ampex ATR-102 2-Track Tape Recorder was a near-instant hit,
thanks to its revolutionary servo-controlled reel motors and capstan, which provided
smooth, continuous tape tension and handling. The large capstan, and absence of pinch
rollers, provided nearly non-existent speed drift and ultra-low flutter. The clever ATR-102
design allowed users to change out heads and guides in mere minutes, with a 1” head
being a very popular “hot-rod” modification in more recent years — especially when
running at 15 IPS (inches per second). The ATR’s role in modern recording history is so
prevalent, that it would be easier to list classic albums that weren’t mixed down on this
machine, rather than to try to list all those that were.
Plug-In Parameters
Like the ATR-102 hardware, the plug-in allows you to choose between various Signal
Paths (Input, Sync, Repro), different Tape Speeds / Emphasis EQs (NAB, CCIR, AES)
and Tape Formula combinations, even including home/consumer tape. The Input
(Record) Gain knob and the Cal button are the primary controls for regulating levels, and
even saturating the tape, and can be used to deliver a heavily colored sound if desired.
Other ATR-102 features include: 1/4,” 1/2,” or 1” Head Select, Biasing/Calibration
controls (auto and manual), crosstalk, adjustable wow and flutter, and adjustable tape
delay, which can be used for Automatic Double Tracking effects on vocals, guitars, and
more.
In Use
The primary use for Ampex ATR-102, and the recommended method for evaluating
this plug-in, is as the last stereo insert on your master fader (or possibly the second-
to-last insert before a brick-wall processor such as the UAD Precision Limiter). Set up
the plug-in by first adjusting Tape Speed, Tape Formula, Cal Level, and Emphasis EQ,
or simply select a preset. Note that as you lower the tape speed (i.e. 15 IPS, 7.5 IPS),
the tape “sound” becomes more audible. Once this basic setup is made, adjust the L/R
Record (input gain) levels for more or less tape/circuit coloration and saturation.
Other common uses for the Ampex ATR-102 are as individual mono or stereo insert
effects, or as an auxiliary group effect where the user wishes to apply it only to specified
sources or groups (e.g., drums, guitars, etc). Check out the ATR-102 Tips and Tricks blog
article below to learn more.
• www.uaudio.com/blog/ampex-atr-102-tips-tricks