From private collection up for sale extremely rare excellent condition 1981 “Silver Screw” Boss PH-1R Phaser.

Serial Number 087000, Made in Japan (Black Label).

Fully working, with a very few signs of use, complete with box and extremely rare paperwork.

I also throw in a specific Boss ACA-230G power adapter and a genuine brand new era-alike Toshiba 9V S-006P battery.

Photos speak for themselves.

Worldwide shipping, ask for quotes.

Follows description from Equipboard:

PH-1r Analog Phaser

This was an updated version of the original PH-1. It had an additonal “Resonance” knob (feedback control) to increase the tonal variations. This is a 4 stage phaser like the PH-1 and its biggest competitor at the time, the MXR Phase 90. It can create an wide array of different tones.

Version Differences
The earlierst versions the P in PH-1R was located under the s in Phaser. Later the font was slightly changed and the P was then found under the e i Phaser. This change happened around serial number 14xx00. The early PH-1R’s with 4 digit serial numbers had a silver thumb screw instead of the later black screw.

Specifications
Controls: Rate, Resonance, Depth
Connectors: Input, Output, AC Adaptor
Current Draw: 11 mA (DC 9V)
Weight: 400 g (.88 lbs)
Input Impedance: 470kOhm
Signal/Noise Ratio: Over 90dB (IHF-A)
Recommended Load Impedance: Over 10kOhm
LFO Speed: 100 ms ~ 16 s
Recommended AC Adaptor: ACA Series

Labels
Black – Made In Japan
The PH-1r was sold from October 1980 to May 1985.

Power:

Battery 9V (1)

AC Adaptor (ACA-120, Optional)

Current Draw:

11 mA at 9V

Control:

RATE

DEPTH

RESONANCE

Others:

Normal/Effect Changeover Switch

Battery Check Lamp

(Also confirmation of Normal/Effect changeover)

Jacks: INPUT / OUTPUT / AC Adaptor

Phase Shift: 4 steps, 720 degrees

LFO Speed: 16 sec ~ 100m sec

S/N Ratio: Over 90dB (IHF-A)

Input Impedance: 470K Ohms

Output Load Impedance: Over 10K Ohms

Maximum Input: -5dB

Gain: UNITY 1

Dimensions: 70(W) x 55(H) x 125(D) mm

2-3/4(W) x 2-3/16(H) x 4-15/16(D) inches

Weight: 400g

Disclaimer: minor characteristics due-to-age such as light pots scratching /  hums / hisses / clicks on every 10+ years old electronic equipment for sale may occur. 

During the life span of the items, repair or restoration actions may have been made and different era / craftsmanship components may have been used.

For mentioned items are sold as-is according to the description and provider / e-commerce platform rules.

Please make sure that your shipping address is correct prior to purchasing, incorrect addresses and failing to fulfil eventual customs fees and instructions will result in additional costs.