Roland - Pedale effetti - Giappone - 1975 (Senza prezzo di riserva)

Brand: Roland
Model: AP-2 PHASE-II
Type: Vintage Analog Phaser Pedal
Made in: Japan
Serial number: Not specified

Rare early Roland analog phaser from the mid-1970s, dating from the period before the BOSS compact pedal line became established.

This listing is for a Roland AP-2 PHASE-II, an early Japanese-made phaser pedal from Roland’s formative effects era.

Based on internal component markings, including likely 1974 date codes on the LM2902 operational amplifiers and markings consistent with 1975-era production on several electrolytic capacitors, this unit is estimated to have been assembled around 1975, possibly during the middle to latter part of the year.

Roland was founded in 1972, making the AP-2 an especially early example from approximately the first few years of the company’s history.

Carefully cleaned, inspected, serviced where appropriate, and fully tested, the pedal operates properly with two 9V batteries.

All electronic components appear original, and no obvious signs of electronic component replacement were identified during inspection.

The AP-2 represents an early period of Japanese analog effects design, with a large enclosure, battery-only power system, period Japanese electronic components, and construction that differs significantly from the later BOSS compact-pedal format.

**Key Features & Condition**

Model: AP-2 PHASE-II

Brand: Roland

Made in Japan

Estimated 1975 production

Possibly assembled around mid to late 1975

Early Roland-branded analog phaser

Pre-BOSS compact pedal era

All electronic components appear original

No obvious electronic component replacement identified

Carefully cleaned and inspected

Potentiometers cleaned and serviced

Input and output jack contacts cleaned and treated

Tested and confirmed working properly

Battery operation only

Uses two 9V batteries

No AC adapter operation

At the time of testing, no noticeable scratchiness was present in the potentiometers.

However, this is a vintage electronic device approximately five decades old. Although it is currently operating properly, future freedom from scratchiness or contact noise cannot be guaranteed. Such symptoms may develop due to age, storage, transportation, environmental conditions, or continued use.

The pedal shows scratches, dirt, oxidation, finish wear, and other cosmetic signs of age and genuine use consistent with vintage equipment.

Please refer carefully to the photographs for detailed cosmetic condition.

**Maintenance / Inspection Details**

The entire unit was carefully cleaned.

The potentiometers were serviced by removing oxidation from the wiper contact areas, cleaning the carbon tracks with electronic cleaner, and applying contact treatment where appropriate.

The input and output jacks were cleaned as thoroughly as possible, and contact treatment was applied.

During testing, the pedal operated properly.

However, the input jack shows some sensitivity depending on the plug used.

Five different shielded cables were tested. With one of the five cables, the plug felt slightly loose in the input jack, and the audio signal could cut out when the plug was moved from side to side.

Replacement of the input jack was considered.

However, because the pedal appears to retain its original components and the original jack construction is not simple to disassemble, preservation of the original condition was prioritized.

The original jack was therefore retained, cleaned, and treated as thoroughly as practical.

Buyers should be aware of this plug compatibility characteristic when selecting a cable for use with the pedal.

**Estimated Production Period**

Estimated production: circa 1975

Possible assembly period: mid to late 1975

Confidence level: Reasonably high, but not definitive

The dating estimate is based on several internal component markings that together indicate a likely 1974–1975 component production period.

Because some markings use manufacturer-specific coding systems that cannot be interpreted with absolute certainty, the estimated 1975 production date should be regarded as an informed estimate rather than a confirmed manufacturing date.

**Production Dating Evidence**

Operational Amplifiers

LM2902N — Marking: 418

LM2902M — Marking: 421

These markings are consistent with possible 1974 date codes:

418 — likely 1974, Week 18

421 — likely 1974, Week 21

If interpreted in this way, the operational amplifiers were likely manufactured around May 1974.

These dates are consistent with use in a pedal assembled during the following year.

**Electrolytic Capacitors**

Documented internal capacitor markings include:

10V 47µF — marking unclear / no clearly readable production code

50V 1µF — Marking: 5F33

50V 1µF — Marking: 5F33

16V 10µF — Marking: 5B33

16V 10µF — Marking: 5B33

16V 10µF — Marking: 5B33

The 5B33 and 5F33 markings appear consistent with 1975-era production.

If interpreted as year/month-related codes, they may indicate parts produced around early to mid 1975.

Because the exact coding system used by the capacitor manufacturer has not been independently confirmed, these markings are treated as supporting evidence rather than absolute proof of production date.

**Transistors**

Documented transistor markings include:

2SC1000 GR — T:4T

2SC1000 GR — T:4T

2SK30A Y — T.4J

2SK30A Y — T.4J

2SK30A Y — T.4J

2SK30A Y — T.4J

2SK30A Y — T.4J

2SK30A Y — T.4I

These transistor markings are consistent with mid-1970s Japanese electronic component production and align with the estimated 1974–1975 component period.

**Other Documented Internal Markings**

Trimmer: 5 C 503

PCB marking: 052-112A

Footswitch: Miyama MS-135-136

All electronic components appear original.

No obvious signs of electronic component replacement were identified during inspection.

**Conclusion of Dating Analysis**

The internal evidence indicates that the pedal was assembled after the manufacture of its likely 1974-dated operational amplifiers and is supported by capacitor markings consistent with approximately 1975 production.

Taking normal component inventory and assembly practices into account, the most reasonable estimate is:

circa 1975

Possibly mid to late 1975

This should be treated as an informed production estimate rather than an exact confirmed manufacturing date.

**Signal Design & Historical Interest**

The AP-2 PHASE-II is an early analog phaser from Roland’s pre-BOSS compact-pedal era.

Phasing is produced through analog phase-shifting circuitry that alters the phase relationship of parts of the audio signal and recombines the processed signal with the original.

This creates the characteristic moving peaks and cancellations associated with classic analog phasing.

Unlike later compact effects designed around standardized pedal formats, the AP-2 uses a substantially larger enclosure and a battery-only power arrangement.

Its construction reflects an earlier generation of Japanese effects engineering, before the compact pedal format became the dominant design approach.

The AP-2 therefore offers interest not only as a playable vintage analog phaser but also as an example of the development of Japanese effects technology during the 1970s.

**Production Background & Historical Context**

Roland was founded in Japan in 1972.

The AP-2 PHASE-II appeared during the company’s early years, before the later BOSS compact pedal series became widely established.

This places the AP-2 within an important transitional period in Japanese effects design.

During the early and mid-1970s, electronic effects pedals were still developing rapidly in terms of circuit design, enclosure format, switching systems, power arrangements, and practical stage use.

The AP-2 reflects this earlier design philosophy.

Its relatively large enclosure, battery-only power supply, Japanese electronic components, and internal construction are distinctly different from the standardized compact pedal architecture that would later become closely associated with BOSS.

The model therefore provides an interesting link between Roland’s early effects development and the later evolution of Japanese compact effects pedals.

This example is particularly interesting because the internal electronic components appear to remain original.

The documented LM2902 operational amplifiers, Japanese transistors, electrolytic capacitors, original Miyama footswitch, and PCB markings provide useful physical evidence for studying the construction and approximate manufacturing period of the unit.

The estimated 1975 production period places this example among the earlier generations of Roland-branded effects.

For collectors of vintage Japanese effects, early Roland equipment, and historically significant analog audio technology, the AP-2 PHASE-II represents an uncommon surviving example from an important period in Japanese effects-pedal development.

For players, it also remains a functional 1970s analog phaser with a character and construction substantially different from later compact designs.

**Condition Details**

The pedal is working properly at the time of testing.

There are visible scratches, dirt, oxidation, finish wear, and other cosmetic signs of age and use consistent with vintage equipment of this period.

The unit has been thoroughly cleaned overall while preserving its original appearance and components wherever practical.

The potentiometers have been cleaned and serviced.

At the time of testing, no noticeable scratchiness was present.

However, due to the age of the pedal, completely noise-free future operation cannot be guaranteed. Potentiometers, switches, jacks, and other electrical contacts may develop scratchiness or contact noise due to age, storage, transportation, environmental conditions, or continued use.

The input jack also has the plug compatibility characteristic described above.

Of five shielded cables tested, one plug fit slightly loosely and could cause the audio signal to cut out if the plug was moved from side to side.

The original input jack has been retained in order to preserve the originality of the pedal.

Please refer carefully to the photographs for detailed cosmetic condition.

**Power Supply (Important)**

This pedal operates using two 9V batteries.

Battery operation only.

The original design does not support AC adapter operation.

Batteries are not included.

**Included**

No accessories included.

Pedal only.

**Shipping & Import Charges**

The item will be carefully packed and shipped from Japan using eLogi, an international shipping service that officially supports integration with Catawiki.

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