Four Channel tape machine from the 1970s. Made in Japan.-Track system: 4-track, 4-channel, stereo/multi channel system-Heads: 1 x erase, 1 x record, 1 x playback-Motor: 2 x reel, 1 x capstan-Reel size: up to 10.5 inch reel-Tape speeds: 7 12 15 ips-Wow and flutter: 0.04% (15 ips)-Frequency response: 25Hz to 24kHz (15 ips)-Signal to Noise Ratio: 55dB-Total harmonic distortion: 0.8%-Input: 60mV (line), 0.25mV (mic)-Output: 0.3V (line)Includes manual.Video: https://youtu.be/DRa6IUS76GEProduct SpecsItem Number: 40515Make: TeacModel: A-3440Condition: Very GoodFinish: BlackCategories: pro-audio recordingYear: 1970sMade In: JapanMPN: 40515