Model:900-P / PT-900
Country of Manufacture:USA
Release dates:1949 - 1952
Speeds: 7 1/2, 15
Max Reel Size("): 7"
Number of heads: 3
Head Composition: Permalloy
Head Configuration: Mono - Full Track
Frequency Response:(±3 dB): 50Hz - 15kHz at 15 ips. 50Hz - 10kHz at 7½ ips
Wow and Flutter:0.2% at 15 ips. 0.25% at 7½ ips
Sound quality rating:7 / 10
Long-term reliability rating: 7 / 10
The portable 900-P (sometimes referred to as the PT-900 recording system was comprised of a single-motor, 7″ reel version of the R7-tape mechanism and an A-920 amplifier.
Features included three heads, three microphone channels with master gain control in recording amplifier, Weston type 30 illuminated VU meter switchable to show record level, playback level, bias current and erase current and a 2-speed capstan motor with toggle switch for 7½ ips and 15 ips.
Distortion: 3% / half-track mono