Amplifier is the heart and brain of an audio system. In the past I have been using amplifiers which were sourced either from USA or China. The quality of amplifiers from both the places is exceptional. But there were a few logistical and economical issues. It takes around 4-5 weeks for the amplifiers to reach and then because I make very limited number of systems I don’t have an importers custom ID. So, a lot of time the amplifiers are stuck in customs and take another 3-4 weeks for processing. I found a vendor who sells and sometimes stocks the amplifiers I was using but the downside is that they turn out to be too expensive.
I wanted to use something which was built locally (Made in India) as it saves a lot of shipping time, cost and fuel. I came across an OEM for making custom made amplifiers. I had already decided on the specifications of the amplifier, and there were a couple of option for the chipset. As I’ve built a considerable number of systems, I went ahead with a Class D amplifier setup which gives a clean sound with exceptional efficiency. These boards use the same chipset as the ones which I was getting from USA and China. The boards have been branded as well as this is an OEM product.
I was facing the problem of mounting the amplifiers from USA and China as they had the volume potentiometers soldered to the board, so placement and accessibility was a problem. The custom made amplifiers which I have, the volume potentiometer and 3.5mm aux jack are connected to the board using ribbon wires. This makes the placement, access and replacement of the board very easy. Board can be kept at one place and the potentiometer and AUX can be kept wherever is the control panel.
Specifications of the SA/CDA-250 board are
- 50 Watt Per Channel Power
- 20Hz – 20KHz Frequency Response0
- 4 – 8 Ohm Impedence
- Bluetooth 4.1 aptX Connectivity
- 3.5mm Auxiliary Input
- Taiwan Volume Taper Potentiometer
- 12-24 Volt Voltage Supply
- 2A-4A Current Supply (Preferably 2A)