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Sound Rating: 7 / 10 # Owners: 1
Relaibility Rating: 9 / 10 Views: 665

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Technical Details

Brand: Pioneer


Category:Super High Fidelity


Electronics:Solid State


Country of Manufacture:Japan

Release dates:1977 - 1982

Original Price: $575

Tracks:1/4 Rec/PB

Speeds: 3 3/4, 7 1/2

Max Reel Size("): 7"

Number of heads: 4

Dimension: 19 x 9 x 14" - 48 x 23 x 36cm

Head Composition: Permalloy

Head Configuration: Stereo

# Motors: 3

Auto Reverse?:Yes

Voltage(s): 110-120v, 220-240v

Outputs: RCA, DIN

Frequency Response:30Hz to 28kHz at 7½ ips - 30Hz - 24kHz at 3¾ ips (+-3dB)

Wow and Flutter:.05% at 7½ ips - .08% at 3¾ ips

Signal-to-Noise Ratio:58

Sound quality rating:7 / 10

Long-term reliability rating: 9/ 10

Weight: 44 Lbs. 20kg.

Additional Details


The Pioneer RT-707 is a rack-mountable stereo four-track tape deck with three motors and a pitch controllable AC Servo Direct Drive capstan motor. No belts to stretch or crack, ensuring low wow & flutter over a long working life. This machine is built like a tank and most technicians will tell you that they don’t see many of these in for service. With its unique dimensions, it is similar to the RT-701 which was introduced one year earlier. The 707 added  foil-sensing auto reverse for playback and the following additions located on the back panel-  output level pots , DIN input outputs and switched AC terminals. Recording can only be done in the forward direction only.

RT-707’s have become very sought after in recent years as they are, relatively speaking, more affordable than many of the upper end Japanese R-R’s. At the Barclay Crocker facility in Poughkeepsie, they used an RT-707 and quite a few enthusiasts report that the 7″ BC tapes sound particularly good on 707’s without Dolby decoding.

Another detail that should be noted about this machine is that if you want to hook up an external preamp and continue to have auto reverse convenience, that might be quite challenging, But it can be done. We will be posting the information on how to do this in the coming months.

An optional wood case was offered in certain markets, but is very hard to find. The dimensions of this machine 12¾ x 19 x 8¾ are quite unique.

Additional Info

Motors Capstan- Direct-Drive FG-servo
Reel- 6-pole inner rotor induction x 2
Logic switching
REC ON/OFF switching for each channel
± 6% Pitch Control
Independent mic/line mixing
Continuous play repeat – (reset your counter to zero at the start, at the end of the tape, deck sees the sensing foil and reverses back to zero in switches again)
Direction switch next to the pause button
Two play head azimuth adjustments on the head block
Output levels pots on the back

Total harmonic distortion 1%
Crosstalk 50dB
Input 50mV (line) .25mV (mic)
Output .45V (line)

EQ: NAB / Channel separation: 50dB / Crosstalk: more than 50dB / Bias frequency: 125kHz / Erase ratio: 70dB / Rewind speed: less than 100 seconds at 370m tape / Semi-conductors: 67 transistors, 4 FET’s, 5 ICs, 47 diodes, 4 zener diodes, 2 various / Outputs: line 450 – 700mV at 50 Kohms and headphones / Dimensions: 12¾ x 19 x 8¾ ” (324 x 483 x 222mm) Weight 20Kg.

Pioneer RT-707 Restoration

Pioneer RT-707 Restoration


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