Rockville Tube Amplifier Bluetooth Receiver for Yamaha NS-6490 Speakers — 25W x2 (USB/Optical/Coaxial)

This Rockville tube amplifier/receiver is designed to drive Yamaha NS-6490 speakers while delivering warm, tube-driven sound and modern connectivity. Finished in black, it features blue illuminated tubes and matching blue-lit control knobs for a classic look with contemporary flair. What’s included: Tube Amplifier / Receiver, 5 Foot RCA to 3.5MM cable, 5.5 Foot Power cable, Owners manual / Warranty card. Power and sound: Rated at 25 watts x 2 RMS @ 8 ohm and 35 watts x 2 RMS @ 4 ohm. Tube circuitry resists hard-clipping at loud volumes and typically gives the impression of greater power — often sounding closer to twice the rated output. Connections and playback: Built-in Bluetooth (2.1+EDR) with a 33 foot range for wireless streaming. One set of RCA inputs to connect sources such as a TV, laptop, or MP3 player. Optical and coaxial digital inputs, USB input (supports WAV/MP3/WMA/APE/FLAC), and a sub output. Also includes a headphone output and a built-in preamplifier. Controls and outputs: Adjustable bass and treble via a 2-band equalizer, plus a VU meter for visual monitoring. Rear speaker terminals use banana plug / binding post outputs for 2 speakers. USB playback from thumb drives supported. Technical specifications: - Frequency Response (3dB): 22Hz-20kHz - Input Impedance: 47kO - Input Sensitivity: 300mV - Output Impendence: 4-8ohm - Total Harmonic Distortion(THD): ?0.02% - Signal-to-Noise Ratio(S/N): ?86dB - Bluetooth: 2.1+EDR - USB: Supports WAV/MP3/WMA/APE/FLAC - Power: 110V Physical: Unit weight: 6.6 lbs. Unit dimension: 10.6"x10.2"x5.1".