Manufacturer | Fosi Audio |
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Place of Business | Fosi Audio |
Item model number | LC30-Black |
Parcel Dimensions | 33.5 x 23.39 x 10.79 cm; 1.8 kg |
ASIN | B0D31JLTMJ |
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Fosi Audio LC30 VU Meter Amplifier Speaker Selector Switch Box Audio Visualizer 2 in 2 Out Vintage Switcher for High Power Stereo Class A, B, AB, D, Tube Amps Home Audio Component Remote Control-Black
Purchase options and add-ons
- Vintage Elegance: The LC30 boasts dual large VU meters, complete with adjustable brightness across five levels. It offers versatile connectivity with two inputs and two outputs, enabling four distinct configurations. Beyond its functional prowess as a switcher, it stands as exquisite decorative VU meters allowing you to enjoy the vibrant audio-visual feast
- Versatile Compatibility: Fully supports a wide range of amplifiers. The large enclosure design accommodates not only two Fosi Audio compact amplifiers on top but also seamlessly integrates with traditional Class A, Class B, Class AB, and tube amplifiers without issues to meet your diverse audio enjoyment needs
- Superior Components: Integrated with 390Ω protective load resistors, thickened copper foil circuits, premium speaker binding posts, and switching relays, the LC30 ensures virtually no impact or loss in sound quality and supports a maximum 250W power transmission per channel. This allows you to enjoy the purest high-fidelity sound
- Ease of Use: Offers both button and remote control operation, enabling one-tap switching between two amplifiers and two speakers. It streamlines the process of A/B comparison testing for two amplifiers or speakers, ensuring straightforward accessibility. Moreover, adjusting the backlight brightness and needle sensitivity is made effortlessly simple, enhancing the overall user experience
- Crafted for Audiophiles: The LC30 was specially developed to cater to our fans' requests. It embodies the Fosi Audio signature all-aluminum alloy construction for durability and reliability. This device is destined to be a lasting companion for your HiFi home audio system, ensuring enduring satisfaction
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Product information
Technical Details
Additional Information
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Product details
- Is discontinued by manufacturer : No
- Parcel Dimensions : 33.5 x 23.39 x 10.79 cm; 1.8 kg
- Date First Available : April 30 2024
- Manufacturer : Fosi Audio
- Place of Business : Fosi Audio
- ASIN : B0D31JLTMJ
- Item model number : LC30-Black
- Country of origin : China
- 鶹 Rank: #98,479 in Electronics (See Top 100 in Electronics)
- #460 in Audio Component Amplifiers
- Customer Reviews:
Product Description

Reviving the Classic Vintage Charm
Fosi Audio LC30 Black VU Meter Amplifier Speaker Selector
A 2-in 2-out amplifier/speaker switch box designed for HiFi enthusiasts. It allows seamless switching between two amps or speakers, eliminating the hassle of cable plugging. The needles’ lively dancing on the music enhances your audio-visual experience.

Effortlessly Switch Between Two Sets of Amplifiers/Speakers
The LC30 was specially developed to cater to our audiophile fans‘ requests to complement your home audio system setup. It can serve as an amp/speaker selector or a pure VU meter allowing you to enjoy the vibrant audio-visual feast.
- Supported Amplifier Types: BTL, Class A, Class B, Class AB, Class D and tube amplifiers, etc.
- Maximum Power Support: 250W@4Ω per channel
- VU Meter Brightness Adjustment: 5 levels(100%, 75%, 50%, 25%, Off)
- Power Supply Voltage: DC 5V USB-C
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Supports High Power Transmission
Each channel supports up to 250W, ensuring strength and clarity in your music.
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Compatible with Various Amplifier Types
Supports all mainstream amplifiers on the market, meet your diverse pure music enjoyment needs.
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Large-Size VU Meters
Dual 85*45mm VU meters offer real-time feedback on left and right channel signal strength.
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Front Panel Multifunction Buttons
Three integrated keys for power, brightness adjustment, and speaker/amplifier switching.
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Needles Sensitivity Adjustment Knob
Adjusts sensitivity to match various input signal strengths, capturing every note's pulse.
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Five-Level Backlight Brightness Adjustment
VU meter backlight brightness offers five settings: 100%, 75%, 50%, 25%, and off.
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Large-Sized Chassis Design Saving Space
Can accommodate Fosi Audio compact amplifiers on the top, offering versatile configuration options.
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Multifunctional Remote Control
Makes switching more convenient, allowing you to navigate your audio and focus on the music.
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Exquisite All-Aluminum Alloy Chassis
One-piece CNC-molded and anodically oxidized for a sandblasted all-aluminum body.
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Connection Diagram When Used as a Switcher
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Connection Diagram When Used as a Pure VU Meter

High-quality Relays
Leveraging superior internal components for high-power lossless output, creating an unparalleled exceptional listening experience for you.

390Ω Load Resistors
Designed to prevent amplifier no-load conditions, guaranteeing stable operation and extending lifespan.

Thickened Circuit Traces
Utilizes thickened copper foils in the circuitry to minimize power loss during audio transmission.

User-friendly Terminal Design
Terminals oriented upwards/downwards simplify the cable connection process, ensuring easy and quick connections.
Comparison
![]() LC30-Black
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| ![]() LC30-Yellow
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| ![]() MC101 | ![]() MC351 | |
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Customer Reviews
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4.1 out of 5 stars 56
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4.4 out of 5 stars 117
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Type
| VU Meter Amp Speaker Selector | VU Meter Amp Speaker Selector | Bluetooth 2.0 CH Amp | Bluetooth 2.1 CH Amp |
MAX Power Output
| - | - | 100W x 2 | 165W x 2 + 350W @ 4Ω |
Input
| Two amplifiers | Two amplifiers | Bluetooth + RCA | Bluetooth 5.3+RCA+COA+OPT+USB |
Output
| Two pairs of passive speakers | Two pairs of passive speakers | Passive Speakers | SPK OUT+SUB OUT+3.5mm PRE OUT |
Treble & Bass Control
| ✘ | ✘ | ✔ | ✔ |
THD
| - | - | ≤0.03% | ≤0.03% |
SNR
| - | - | ≥100 | ≥100 |
Terminating Impedance
| - | - | 4-8 Ohm | 4-8 Ohm |
Power Adapter
| - | - | 24V/4.5A | 32V/5A |
Work Voltage
| DC 5V | DC 5V | AC 110V - 240V | AC 110V - 240V |
From the brand

Amplifying Your Voice, Shaping Our Innovation
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Guided by our mission of "Redefining HiFi with Unmatched Value", Fosi Audio continues to fuel its passion for the Hifi industry, ramp up R&D efforts, and co-create new HiFi equipment with users. We pledge to bring more amazing Hifi gear with high value for the price, innovative design, cutting-edge technology, and premium quality, to audiophiles worldwide.
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Fosi Audio V3
TPA3255 Class D Home Audio Mini Speaker 2 Channel Amp 300 Watts x2
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Customer reviews
Top reviews from Canada
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Reviewed in Canada on October 13, 2024Verified PurchaseUtilisation avec mon
système audio "High End" dans mon studio, pour faire la comparaison de différentes paires d'enceintes ! N'induisent pas de distortion ni perte du "Damping Factor" . Boîtier solide et impressionné par sa construction, bravo et merci !
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Reviewed in Canada on September 25, 2024Verified PurchaseBon produit et très bien construit. Je recommande.
- Reviewed in Canada on December 14, 2024Verified PurchaseInternal load resistors do NOT switch into unused amplifier as advertised. Tech support were no help and would not admit that design is flawed.
Top reviews from other countries
- JasonReviewed in the United States on April 28, 2025
5.0 out of 5 stars If you have multiples of amps and speakers, you need at least one!
Verified PurchaseIf you are one of those weird audiophile types that has multiples of EVERYTHING, you need at least one of these. I am one of those weirdos. I have 4 variations of this and this one is my favorite. I am always comparing different amps and speakers. This lets you do it via remote control and stay seated in your listening position. If works well, its easy to use and setup, and looks good. At the price, it is a good value. It is a little bigger than some of the others, but I like the look so that was a plus for me.
- richytReviewed in the United Kingdom on December 31, 2024
5.0 out of 5 stars This is a good looking unit
Verified PurchaseThis is not particularly cheap, but is easy to install and works well. It looks smart when in use. Perhaps the only downside is that I chose the dark coloured meter option. The unit has ver fine needles on the meters and they can be diifficult to see, but this is a mall issue. The light coloured meters might be easier to see. However, it's a worthwhile addition to a hi-fir separates system.
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Cliente 鶹Reviewed in Italy on February 18, 2025
5.0 out of 5 stars Fosi vu-meters
Verified PurchaseMi è piaciuto tutto specie i connettori
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Cro67Reviewed in France on April 15, 2025
5.0 out of 5 stars Excellente article
Verified PurchaseCorrespond parfaitement à mes attentes.
Excellent produit. Je recommande.
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鶹 KundeReviewed in Germany on June 1, 2025
5.0 out of 5 stars sehr gutes Produckt
Verified PurchaseSehr gute Verarbeitung macht was er soll und das richtig gut!