Bluetooth Amplifier Board YS-S350H 2.1 Channel 220W2+350W - Powerful

In this review of the Bluetooth Amplifier Board YS-S350H the bottom line is simple: it delivers serious power for DIY home theater and active speaker builds while offering modern inputs and protection features. The board is aimed at enthusiasts who need a compact, high-output 2.1 solution with flexible connectivity; its standout attribute is the combination of 220W per stereo channel plus a dedicated 350W subwoofer channel, all controllable via Bluetooth and an app. For anyone building a small theater or upgrading passive speakers into an active system, this board balances raw output with convenient control.

Key Features

• Power Output: The board supplies up to 220W to each left and right channel and a dedicated 350W subwoofer channel, providing deep bass and clear loudness for medium to large rooms.
• Multiple Inputs: Built-in Bluetooth 5.1 plus AUX, U drive and USB sound card inputs let users connect phones, players and USB sources without extra adapters.
• Protection Suite: Over-voltage, under-voltage, overheating, clipping and short-circuit protection reduce risk to speakers and the board during heavy use.
• Smooth Volume Control: The high-end encoder knob gives precise, tactile volume adjustments for fine tuning levels during listening sessions.
• Smart Control: Compatible with the YS Audio-APP, the amplifier can be adjusted remotely for source switching, volume and basic configuration.

Who It's For

This amplifier board is best for DIYers converting passive speakers to active ones, custom home theater builders, and hobbyists who need high continuous power in a compact board form. Its mix of Bluetooth 5.1 and wired inputs suits users who want both wireless streaming and dedicated sources.

It is less suitable for users seeking an all-in-one consumer receiver with room correction, video switching, or a built-in DAC with advanced settings; those buyers should consider full-featured receivers. It also assumes the user can provide an appropriate power supply and speaker wiring for the specified wattages.

Pros & Cons

Pros

• High output: strong 220W per channel and a powerful 350W sub output for impactful sound.
• Versatile inputs: Bluetooth 5.1 plus AUX, U drive and USB sound card options cover most sources.
• Robust protections: multiple safety mechanisms help protect the board and connected speakers.
• Smooth control: encoder knob and app support make daily use convenient.

Cons

• Requires external power supply and speaker matching knowledge, which may deter casual buyers.
• Does not include advanced room calibration features found in full receiver solutions.

Specifications

Channels	2.1 channel
Left/Right Power	220W each
Subwoofer Power	350W (max 355W stated)
Bluetooth Version	Bluetooth 5.1
Inputs	AUX, U drive, USB sound card, Bluetooth
Protection	Over-voltage, under-voltage, overheating, clipping, short-circuit
Control	High-end encoder knob, YS Audio-APP

Our Verdict

The YS-S350H is a strong choice for DIY home theater builders and audio hobbyists who need high continuous power and modern connectivity without a large receiver. Its solid protection package and app control make it a practical value for active speaker projects, provided the buyer can supply a suitable power source and speaker load.

Frequently Asked Questions

Can I stream wirelessly to this board?
Yes, it supports Bluetooth 5.1 for wireless streaming from phones and compatible devices.

Does the board include speaker protection?
Yes, it includes over-voltage, under-voltage, overheating, clipping and short-circuit protection.

Is a separate power supply required?
Yes, buyers must provide an appropriate DC power source capable of supporting the listed wattages.