The A12 APEX is an integrated amplifier from Advance Paris's APEX range. It uses the hybrid design of the brand's flagship integrated amplifiers. The preamplifier has two ECC81/12AT7 tubes, and the power stage is a 2 x 190W Class A/B amplifier with two toroidal power transformers to drive demanding speakers.
A High-Bias switch activates double Class A bias, so the amplifier runs in Class A at higher power levels. Zone A and B speaker outputs allow two sets of speakers. The amplifier has loudness, bass, treble and balance settings, and an automatic standby adjustable from 5 to 60 minutes.
It has 8 analog and 8 digital inputs. The HDMI eARC input switches the amplifier on when the TV is turned on and lets it control the volume. An optional A-BTC module adds Bluetooth aptX HD - LL. It can send music from a phone, tablet or computer to the amplifier, or send sound from a connected source to Bluetooth headphones.
- Output power 8 Ω
- 190W (THD+N 1%, 1 kHz, 2 channels driven); 180W (20 Hz-20 kHz, THD+N under 0.07%, 2 channels driven)
- Output power 4 Ω
- 292W (THD+N 1%, 1 kHz, 2 channels driven); 272W (20 Hz-20 kHz, THD+N under 0.07%, 2 channels driven)
- Amplifier class
- Class A/B, with High-Bias switch (ON/OFF) for double Class A bias
- Preamp
- 2 x ECC81/12AT7 tubes
- Transformers
- 2 x toroidal, 280 VA each
- Frequency response
- 20 Hz-80 kHz (±1 dB, 43W, 8 Ω)
- Distortion
- 0.047% (1 kHz, 135W, 8 Ω)
- Signal-to-noise
- 104.8 dB (1 kHz, 135W, 8 Ω)
- DAC
- ESS9039
- Analog inputs
- 5 x RCA line, 1 x phono (with ground terminal), 2 x XLR line
- Digital inputs
- 3 x optical, 3 x coaxial, 1 x USB for computer, 1 x AES-EBU, 1 x HDMI eARC
- Digital formats
- Optical, coaxial and AES-EBU: 24-bit/192 kHz PCM. USB: 24-bit/192 kHz PCM, DSD64, DSD128. HDMI eARC: PCM stereo
- Outputs
- 1 x REC-OUT (fixed), 1 x PRE-OUT (RCA and XLR), 2 x SUB-OUT
- Headphones
- 6.35 mm jack and 3.5 mm mini-jack
- Speaker outputs
- Zone A and B; screw terminals for bare cable, spade and banana plugs
- Other connections
- AMP-IN input (RCA), Trigger OUT, Trigger IN, A-BTC module input
- Bluetooth
- aptX HD - LL with optional A-BTC module
- Power supply
- AC input 115/230V, 50/60 Hz; 110-220V voltage selector
- Updates
- Via USB key on the UPDATE port