Country of Manufacture:Japan
Speeds: 1 7/8, 3 3/4
Max Reel Size("): 7"
Number of heads: 2
Head Composition: Permalloy
Head Configuration: Mono - Dual Track
Frequency Response:120 - 6kHz at 3¾ ips and 120 - 3kHz at 1ips
Wow and Flutter:7(DIN): less than 0.4%
Sound quality rating:5 / 10
Long-term reliability rating: 5 / 10
The RD-505 was an all-transistor, AC/battery twin track portable mono recorder with two speeds ( 3¾ and 1 7/8 ips),and a five inch reel capacity.
Features included a 3-digit counter, tone control, automatic level control, remote control (switch on mic), a VU meter which doubled as battery indicator and a large internal speaker.
The RD-505 came with a 5 year guarantee, dynamic microphone with remote start/stop switch, tape and spool and had a recommended retail price of £38 11s.
The Get Reel Contemporary Classics CD-ROM contains a vintage test report for this recorder.
THD: 5% / Record level: VU meter which doubles as battery indicator / Position indicator: 3 digit index counter / Heads: 1 combined record / playback and one erase / Motors: single / Audio output: 1 watt max, 800 mW undistorted / Dimensions: 12″ x 10″ x 4″ (305 x 254 x 102 mm) / Batteries: 6 x 1.5V / 2 track mono