BT-398A Stereo Audio Amplifier 2.0 Channel Receiver - Versatile Home

In this review of the BT-398A Stereo Audio Amplifier, the bottom line is simple: this is a compact, feature-rich receiver for someone building a flexible home stereo or party sound system. The amplifier pairs a range of digital and analog inputs with Bluetooth 5.0 and a metal-shielded design, delivering clear HiFi-level sound and practical controls for treble, bass and microphone mixing. If you need a small but powerful center for passive speakers that can also handle karaoke, outdoor gatherings and TV audio, this unit stands out for its connectivity and robust construction.

Key Features

• Multi-mode Inputs: USB, SD, FM, optical and coaxial ports plus AUX provide flexible playback from phones, TVs or stored files so the amplifier can be the hub for varied sources.
• Bluetooth 5.0: Stable wireless streaming with up to 10 m range and lossless decoding makes it convenient to play music from phones and tablets without a wired feed.
• Two-channel Power: The 2.0 channel design supports strong output and compatibility with 4-16 ohm passive speakers, enabling solid stereo performance for rooms and small outdoor spaces.
• Tone and Mic Controls: Independent treble and bass knobs plus dual microphone inputs and reverberation controls let users shape sound and run karaoke or announcements with intuitive hands-on adjustments.
• Durable Hardware: Metal body, shielded inductors and anti-interference circuits are built to maintain stable output under continuous load for reliable home and event use.
• Compact Form Factor: The 7.1 in mini chassis fits bookshelf or small rack locations while still offering professional-style I/O and control layout.

Who It's For

The BT-398A is aimed at homeowners and hobbyists who want a single, flexible amplifier to power passive speakers for music, TV and casual karaoke. It suits people who need multiple inputs (optical/coaxial for a TV, Bluetooth for mobile devices, and USB/SD for local files) and who value hands-on tone controls and mic inputs for parties or small gatherings.

Those who want a high-end audiophile reference amplifier or a compact powered speaker solution should look elsewhere; this unit is optimized as an all-in-one control center for home entertainment, not a separate preamp/processor or an active powered speaker set.

Pros & Cons

Pros

• Wide connectivity including Bluetooth 5.0, optical, coaxial, USB and SD makes it very adaptable to sources.
• Practical tone and mic controls with dual MIC inputs allow karaoke and live-mix uses without extra gear.
• Metal chassis and anti-interference design support stable, continuous operation in busy environments.
• Compact size works well on bookshelves or small racks while driving passive speakers effectively.

Cons

• Not a dedicated high-end audiophile component; those seeking ultra-low distortion beyond typical HiFi needs may prefer separates.
• The unit requires passive speakers and does not include powered speaker outputs or a built-in subwoofer.

Specifications

Channels	2.0 stereo
Peak Power	450W + 450W (peak)
Output Support	Compatible with 4-16 ohm passive speakers
Wireless	Bluetooth 5.0, ~10 m range
Inputs	USB, SD, FM, AUX, Optical, Coaxial
Controls	Volume, bass, treble, dual MIC reverberation
Build	Metal body with shielded inductors

Our Verdict

The BT-398A is a versatile, well-built stereo receiver that works best as a central amplifier for home audio, small parties and karaoke. Its broad input set, Bluetooth 5.0 convenience and hands-on tone controls deliver strong practical value for anyone wiring passive speakers around a living room or backyard. For buyers wanting an all-in-one controller and mic-capable party amp, it is a good balance of features and durability at a reasonable price point.

Frequently Asked Questions

Can it connect to a TV?
Yes; the optical and coaxial inputs allow direct digital connection to most TVs and set-top devices for improved TV audio.

How many microphones can be used?
There are two MIC inputs with independent controls and reverberation adjustment for simple karaoke or announcements.

Will it power bookshelf speakers?
Yes, it is designed to drive passive bookshelf or tower speakers rated 4-16 ohm and delivers robust output for typical home listening and small events.