The Advance Acoustic A12 Apex preamplifier is a hybrid design, combining vacuum tubes for preamplification with transistors for amplification. Its dual-mono design includes two toroidal transformers, while the built-in RIAA phono preamplifier supports MM and MC cartridges. The AMP-IN inputs allow it to be integrated into a home theater system.

It features two subwoofer outputs, configurable for mono or stereo operation, as well as an HDMI eARC input with CEC functionality for synchronizing with your TV and controlling the volume with its remote. Bluetooth connectivity and Bluetooth headphone connection require the optional A-BTC dongle.

• Type: Preamplifier
• Technology: Hybrid, with vacuum tubes and transistors
• Channels: Stereo
• Output power at 8 Ω: 2 × 190 W RMS
• Output power at 4 Ω: 2 × 292 W RMS
• Frequency response: 20 Hz – 80 kHz (±1 dB)
• THD+N distortion: 0.047% (at 135 W)
• Signal-to-noise ratio: 104.8 dB
• Vacuum tubes: ECC81 / 12AT7
• DAC: ESS9039
• Amplifier class: A/B with High-Bias
• Transformers: 2 toroidal
• Phono input: 1, for MM and MC cartridges
• AMP-IN inputs: For connection to a home theater system
• HDMI eARC input: With CEC functionality
• Subwoofer outputs: 2, configurable for mono or stereo operation
• Bluetooth: Via optional A-BTC dongle
• Optical input: 1
• Coaxial input: 1
• USB: 1
• Power supply: 115/230 V, 50/60 Hz
• Width: 43 cm
• Height: 19.5 cm
• Depth: 45.5 cm
• Weight: 18.2 kg