The venerable and well-regarded vintage Kenwood 40-watt stereo amplifier KA-3500. Pairs with the Kenwood KA-5300 tuner. Kown for clean sound and straightforward design and upgraded with an Drok Bluetooth 4.2 module. Bluetooth connectivity allows for playing streamed music from a phone, tablet or other BT-enabled streamer right to the amplifier via the AUX selection. Our in-line design adds Drok Bluetooth functionality while still allowing for a seamless wired AUX connection, automatically switching between them by simply enabling and disabling the Bluetooth connection. The modification is easily reversable. The amplifier has been cleaned, deoxidized and e-caps replaced except for output filters and tone coupling which were beyond scope of the project. Max RMS power: No greater than 35-watts per channel into 8 Ohms at rated THD Inputs: 4: PHONO (magnetic), TUNER, Switchable AUX