MCINTOSH MC451

Monophonic final power amplifier with proprietary Hybrid Drive patented technology, capable of combining the qualities of tube and solid-state electronics

- exclusive Dual Monoblock design, consisting of two separate and independent amplifier units combined in a single chassis, a 150 Watt high/mid frequency tube (into 2, 4 and 8 Ohm) with Unity output transformers Coupled and a 300 Watt Low Frequency Quad Balanced Solid State (into 2, 4 and 8 Ohms) with Autoformer Output Transformers

- expressly designed to ensure state-of-the-art bi-amping configurations, accurate and simple to implement

- built-in variable crossover to allow adjustment of levels (5 steps, between -6 dB and + 3 dB) and filter cuts of each power amp (9 cross points, between 100 Hz and 1 kHz)< /p>

- ability to set the amplifier in Mono mode (the input signal is sent to the internal crossover, which conveys it, with the frequencies divided and configured according to your needs, to the tube amplifier for the high/medium frequencies and to the solid state amplifier for low frequencies) or Separate (the full range input signal is sent unchanged, with all frequencies, directly to the tube and/or solid state amplifiers, even simultaneously, with the possibility of amplifying two pairs of independent speakers)

- tube amplifier equipped with 4x KT88 power tubes and 3x signal tubes (2x 12AT7, 1x 12AX7A), solid-state amplifier with Onsemi ThermalTrak power transistors

- 2x inputs dedicated to each power amplifier: 1x "Vacuum Tube" balanced XLR and unbalanced RCA, 1x "Mono/Solid State" balanced XLR and unbalanced RCA

- DualView Power Output Meter with 2x individually mechanically readable VU-Meters (1x each amp) housed in a single window with Direct LED backlighting

- highly efficient Monogrammed Heatsinks dissipation system with Mc logo shaped on the fins and high current transistors able to guarantee maximum sound performance right from the start

- proprietary Power Guard and Sentry Monitor systems for speaker protection, clipping prevention, overload and short circuit protection

- new proprietary Power Guard Screen Grid Sensor (SGS) technology with dynamic control loop and real-time compensation of any abnormal currents detected on the valve grid