Product Highlights - CH A1.5 User Manual

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Product highlights

CH products are meticulously designed and manufactured in Switzerland by CH Precision Sàrl. Our engineers put together all their
know-how, expertise and ingeniousness to bring you the A1.5, a top performances future-proof modular 2-channel power
amplifier with Ethernet control capabilities and USB flash-drive firmware upgradability. Like all CH Precision products, the A1.5 is
highly versatile: 5 configuration are available with the A1.5: stereo mode requiring a single A1.5 and monaural, bridge mode,
active and passive bi-amplification modes requiring a pair of power amplifiers.
For increased flexibility, the A1.5 also provides two unique features: the global versus local feedback ratio and gain adjustments.
The amount of global feedback in the amplifying loop of each channel can be adjusted to best match virtually every loudspeaker
on the market. The amplifier gain can also be adjusted over a 24 dB range in 0.5 dB steps. This also greatly helps in matching the
output level of the preamplifier, the efficiency of the connected loudspeakers and the listening room. Three standard input are
available (balanced XLR, single-ended RCA and BNC). Unbalanced inputs can be configured as high impedance inputs, or a 300 Ω
load can be engaged. A pass-through XLR line-level output is also provided for daisy-chaining multiple CH amplifiers.
A1.5 main components
Rev 1.0 A1.5 User Manual 7