Blaupunkt BQA 120 Quadro Amplifier is a vintage 4-channel Class A/B powerhouse, famously used in premium audio setups for 90s-era German vehicles like BMW and Volkswagen. Known for its compact footprint and reliable "Quadro" output, this amplifier is a sought-after piece for retro car restoration enthusiasts. Technical Specifications Amplifier Class : Class A / B for high-fidelity sound reproduction. Power Output : 4 x 30 Watts. RMS (Sinus) Power : 4 x 24 Watts at 10% harmonic distortion (20–20,000 Hz). Total Harmonic Distortion (THD) : 0.05% at 1 kHz / 1 Watt into 4 Ohms. Frequency Response : Ultra-wide range from 10 Hz to 90,000 Hz at 3 dB. Signal-to-Noise Ratio : > 90 dB for clear, low-noise performance. Connectivity
Blaupunkt discontinued this model, but you can still find the original BQA 120 manual at: blaupunkt quadro amplifier bqa 120 manual new
Conclusion The Blaupunkt Quadro BQA 120 is a classic workhorse. While the official manual is harder to find than a modern amp’s app-based guide, it’s worth the hunt. The crossover points and bridging diagrams are unique to this model. Stick to the archive sites and forums above, and you’ll be tuning that amp like a pro in no time. Blaupunkt BQA 120 Quadro Amplifier is a vintage
: Used for connecting compatible vintage Blaupunkt head units via a dedicated cable. Input 2 (Spade Connectors) Power Output : 4 x 30 Watts