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SoundTube SB335 Class D Amplifier with Bluetoooth Capability
The SB335 delivers up to 50 W per channel into 8 Ω (2-channel mode) or 35 W per channel into 8 Ω (3-channel mode), with 55 W/40 W respectively at 4 Ω. Offering digital and analog inputs—including Bluetooth® streaming and Dolby Digital® decoding—the SB335 integrates seamlessly with SoundTube or passive speakers and soundbars. A dedicated line-level subwoofer output and RS-232/learned IR control enable versatile system configurations.
Encased in a rugged aluminum chassis with heat-sinking, the SB335 features an external antenna for Bluetooth, detachable Euroblock speaker outputs, and comprehensive mounting hardware for wall or rack installations. Signal-detect auto-standby and 34 dB gain ensure efficiency and audio clarity in commercial environments.
Key Features
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Power Output:
- 2 Ch @ 8 Ω: 50 W/channel (≤10 % THD), @ 4 Ω: 55 W/channel
- 3 Ch @ 8 Ω: 35 W/channel (≤10 % THD), @ 4 Ω: 40 W/channel
- Inputs: Analog stereo RCA, digital coaxial, optical, Bluetooth®
- Subwoofer Output: Line-level LFE with selectable crossover
- Control: RS-232, IR learning, signal-detect auto-standby
- Connectors: 3-pin & 6-pin Euroblock, detachable antenna
- Certifications: CCC, CE, RoHS, UL 60065, ETL-C/US, FCC
- Included Accessories: 3-pin & 6-pin Euroblocks, antenna, IR receiver, mounting hardware, power supply
- Optional Accessories: Replacement Power Supply (AC-PS3240), European Power Supply (AC-PS3240-EU)
- Voltage Gain: 34 dB
- Input Impedance: 10 kΩ unbalanced
- Output Type: Euroblock
Technical Specifications
- Frequency Response: 20 Hz – 20 kHz
- THD + Noise: <0.1 % at rated power
- Crosstalk: >60 dB
- S/N Ratio: >90 dB
- Power Requirements: Internal universal switch-mode supply