Vowenx · microphone DACs & amplifiers
Replacement op-amp for Fosi Audio BT20A Pro
Swapping an amplifier's op-amp changes its sonic character without replacing anything else. These chips fit the Fosi Audio BT20A Pro and V3 to fine-tune the sound to your taste, from the most detailed to the warmest.
Note de 4.8/5 basée sur 32 avis clients.Model: 2pcs MUSES02
Quantity
- 24-48h delivery
- Secure payment
- 30-day returns
- 24/7 support
Product details
In use, these op-amps (operational amplifiers) are audiophiles' favourite trick for tailoring an amplifier: it's what's known as "op-amp rolling". The op-amp processes the audio signal before the power stage; changing it alters the sonic signature — more detail, more warmth, a wider soundstage — without touching the rest of the unit. These chips replace the original op-amp in the Fosi Audio BT20A Pro and V3, which are socket-mounted for easy swapping. Several references to choose from, each with its own temperament: OPA2134PA and OPA2604AP (Burr-Brown/TI, FET, detailed and musical sound), MUSES02 (JRC/NJR, high-end audio op-amp, very refined) and SS3602 (Sparkos Labs, premium discrete op-amp, the most accomplished). These are dual op-amps (two channels) in DIP-8 format. During installation, you must respect the chip's orientation (pin 1 marker) or you risk damaging it. For those comfortable with this kind of handling only. Enjoy a sound shaped to your taste, as long as you get the chip's orientation right.
Compatibility and uses
These replacement op-amps are intended for the audio upgrade (op-amp rolling) of Fosi Audio BT20A Pro and V3 amplifiers, whose op-amp is socket-mounted. They are dual (stereo) op-amps in DIP-8 format. References offered: OPA2134PA and OPA2604AP (Burr-Brown / Texas Instruments), MUSES02 (JRC/NJR) and SS3602 (Sparkos Labs, discrete op-amp), in packs of 1 or 2 pieces depending on the version. Installation requires respecting the orientation (notch / pin 1); a chip inserted the wrong way round can be damaged. Check that your device really uses a dual op-amp on a DIP-8-compatible socket before ordering. Product intended for experienced enthusiasts.
Technical specifications
- Brand: Vowenx
- Type: Replacement op-amp (operational amplifier)
- Use: Audio upgrade (op-amp rolling)
- Compatibility: Fosi Audio BT20A Pro and V3 (socket-mounted op-amp)
- Format: Dual (stereo), DIP-8 package
- OPA2134PA reference: Burr-Brown / TI — detailed, musical
- OPA2604AP reference: Burr-Brown / TI — FET, dynamic
- MUSES02 reference: JRC/NJR — high-end, refined
- SS3602 reference: Sparkos Labs — premium discrete op-amp
- Packaging: Pack of 1 or 2 pieces depending on the version
- Installation: Respect the orientation (pin 1); socket-mounted
- Weight: 0.2 kg
Usage tip
Our team's tip: locate the pin 1 notch before inserting; the MUSES02 and SS3602 aim for the high end, the OPAs for value.
Overview
Changing the op-amp of a Fosi Audio BT20A Pro or V3 alters its sonic signature without replacing anything else. These replacement chips (OPA2134PA, OPA2604AP, MUSES02, SS3602 Sparkos) each offer their own character: more detail, warmth or finesse. Dual DIP-8 op-amps, to be inserted the right way round.
Key features
- Personalised sound: Fine-tunes the amplifier's character.
- Several references: OPA, MUSES02, Sparkos SS3602.
- No major disassembly: The op-amp is socket-mounted.
- From value to premium: Affordable OPAs, high-end MUSES/Sparkos.
Who is it for?
For the hands-on audiophile who owns a Fosi BT20A Pro or V3 and wants to fine-tune its sound. And for anyone who enjoys op-amp rolling.
Frequently asked questions
Customer reviews
Loading reviews…
Frequently asked questions
À quoi servent ces puces ?
À remplacer l'ampli-op d'origine pour modifier la signature sonore de l'ampli.
Pour quels appareils ?
Les amplificateurs Fosi Audio BT20A Pro et V3 (ampli-op sur support).
Quelles différences entre les modèles ?
Chaque référence a son caractère : OPA détaillé, MUSES02 raffiné, SS3602 premium.
Est-ce difficile à installer ?
Il faut retirer l'ancienne puce et insérer la nouvelle dans le bon sens (pin 1).
Combien de puces dans le lot ?
1 ou 2 pièces selon la version choisie.
Quel format ?
Ampli-op double (stéréo) au format DIP-8.
