Soundtube SB335 Channel Class D Amplifier With Bluetooth Capabilities

SoundTube SB335 3-Channel Class D Amplifier with Bluetooth

The SoundTube SB335 is a compact, versatile 3-channel Class D amplifier engineered for localized audio applications in commercial and residential AV installations. Delivering 50W per channel into 8 ohms in 2-channel mode or 35W per channel into 8 ohms in 3-channel mode, the SB335 provides robust amplification for SoundTube speakers, high-fidelity bookshelf speakers, and passive soundbars in AV furniture, digital signage enclosures, and conference room installations where space and efficiency are paramount.

The SB335 accepts both analog and digital inputs, enabling direct connection from televisions, monitors, and media players through its 3-pin and 6-pin Euroblock connectors. Integrated Bluetooth streaming allows wireless audio from smartphones and tablets, while Dolby Digital decoding handles multichannel pass-through from digital sources. An RS232 control port and learnable IR codes provide straightforward system integration with room control systems. A dedicated line-level subwoofer output accommodates matched passive or powered subwoofers. Certifications include CCC, CE, RoHS, UL60065, ETL-C/US, and FCC.

Creation Networks integrates SoundTube amplifiers into commercial AV systems and can advise on pairing the SB335 with appropriate speakers and system controllers — contact us for a project consultation.

Key Features

• 3-Channel Class D Architecture — Efficient amplification in stereo (2-ch) or full 3-channel mode with minimal heat generation and compact footprint.
• 50W/ch (2-ch) or 35W/ch (3-ch) at 8 Ohms — Flexible power delivery to suit a wide range of speaker load configurations.
• Bluetooth Streaming — Wireless audio input from mobile devices for presentations, background music, and demonstration applications.
• Dolby Digital Decoding — Handles multichannel digital audio from TVs and AV receivers for soundbar and display audio applications.
• RS232 Control + Learnable IR — Integrates with Crestron, AMX, and other room control systems; learns IR volume commands from existing remotes.
• Line-Level Subwoofer Output — Dedicated sub output enables bass extension with matched passive or powered subwoofers.
• Analog and Digital Inputs — Accepts balanced/unbalanced Euroblock inputs for direct connection from most commercial source devices.
• Multi-Standard Certified — CCC, CE, RoHS, UL60065, ETL-C/US, and FCC approved for North American, European, and Chinese market installations.

Typical Applications

• Digital signage systems with integrated audio
• Conference room display audio and soundbar reinforcement
• Retail point-of-purchase and kiosk audio
• Museum exhibit audio and interactive displays
• AV carts and mobile presentation systems
• Small-room background music with Bluetooth convenience

Technical Specifications

Frequently Asked Questions

Can the SB335 drive passive soundbars and bookshelf speakers, not just SoundTube speakers?

Yes. The SB335 is designed as a general-purpose 3-channel Class D amplifier compatible with any passive speakers rated at 4 or 8 ohms. It is particularly well-suited for SoundTube speakers but works with any comparable passive loads.

How does the Bluetooth range perform in a commercial environment?

Typical Bluetooth range is 30 feet in open environments. Walls, rack enclosures, and interference from other wireless devices can reduce effective range. For permanent system integration, analog inputs are recommended.

Can the SB335 be controlled by Crestron or AMX systems?

Yes. The RS232 port provides system control integration, and the IR receiver learns commands from standard remotes. Contact Creation Networks for specific driver availability and integration guidance.

Is a rack mount kit available?

The SB335 is not a rack-mount form factor. It is designed for shelf, furniture, or AV cart installation. Mounting hardware is included for surface attachment.

What is the subwoofer output type?

The SB335 provides a line-level subwoofer output via Euroblock connector for pairing with a passive or powered subwoofer in soundbar-style or small-room surround configurations.