FX-AUDIO TUBE-00J (Revised) Ceramic Base. Made in West Germany ERO, brand new.

FX-AUDIO TUBE-00J (revised version) with ceramic base specification. Usable with dual-circuit DIP. Uses ERO KT1807, brand new.

This is the FX-AUDIO TUBE-00J (simplified revised version).
What will be shipped includes the main unit, "original box & genuine vacuum tubes," and additional op-amps "LME49710NA, 2 pieces, with dual-circuit DIP included."

This is the FX-AUDIO TUBE-00J (simplified revised version).
Since I want to use expensive single-circuit op-amps like OPA627AP in a small amplifier, I replaced the interference areas and the film capacitor (metal?).
The output side uses a new type, so it remains a metabolic? film? capacitor.
*If requested, the output capacitor can be Suntan brand 1.0μF 250V. It is also possible to replace it with a film capacitor before shipping ("the auction price will not change").

I personally want to hear the sound of OPAP used in high-end equipment.
I recommend this for those who want to simply try various OPAPs. I am also listing the genuine ceramic vacuum tube base from FX-AUDIO separately, so if you want to modify it at your own risk.

The op-amps include the original N5532 with 8PIN DIP and a dual-circuit DIP with TI op-amps.
In addition, there are two discontinued audio op-amps, the discontinued National Semiconductor LME49710NA ("single-circuit"). One dual-circuit DIP is included.
The photo shows the assembled unit, but I will send an unassembled brand new one.

The modifications (replacement locations) are the output film capacitors and the coupling capacitors for the op-amps. I replaced the capacitors for OPAP to use dual-circuit DIP.
The capacitors for OPAP are the same capacity of 470μF but miniaturized. They are replaced due to interference from dual-circuit DIP.
The op-amps and the film capacitor for the vacuum tube were replaced; the new type was a metal? film capacitor, replaced with the German-made dead stock ERO era KT1807 63V/0.22μF.
The power supply capacitors were replaced with Nichicon's high-grade audio product "Fine Gold" rated at 25V with a capacity of 100μF.

The base is an official FX-AUDIO product. It is the same as those mounted on the limited edition "The ceramic base can be difficult to insert the vacuum tube pins, so please do not force them in."