Write a clear and concise answer to guide your customers.

In order to select the right BAC for your power amp, you will need to find out the maximum power consumption of your power amp / integrated amp.  It should be in the technical user manual for the product. Multiply that figure by 1.5 times, you will arrive at the SAFETY MINIMUM power for a suitable power conditioner.  Or multiply that figure by 2 times or more for better dynamic and noise performance. 

For example, supposed your power amp has a maximum power consumption of 500W.  Multiply 500W by 1.5, you will need a power conditioner capable of 750W power delivery.  In this case, the PLiXiR Elite BAC 1000 (1000W) will fit the bill. Going higher up on the power to Elite BAC 1500 (1500W) or Elite BAC 3000 (3000W) will give you even better performance.  

The power consumption of the PLiXiR BAC itself is low. Less than 2% of the maximum power consumption for each model.  We recommend to keep the PLiXiR BAC powered on at all times for best performance.  In fact, we have removed the on/off switch for the Cube BAC series and Elite BAC MK II series.  The removal of the switch improves the performance further. If you need to power off the BAC for a long time (e.g. going on a vacation), you can unplug the power cord to the BAC. 

Note: On/Off switch is optional in models Elite BAC 1500 MK II and above.

We often have questions regarding the testing of PLiXiR BAC and finding fault. There is nothing wrong with your PLiXiR BAC. The above mentioned are methods/ equipment to test conventional single ended power (live and neutral). They are not designed to check balanced power which PLiXiR BAC is based upon (Positive phase and Negative Phase). The working principle of balanced power is totally different from single ended power. Hence error shows up when you use them to test PLiXiR BAC. 

From our circuit analysis, having an adjustable output means having a larger than necessary feedback path/ area. This means potentially more noise injection into the power supply. Also, due to our pre-regulator 2-stage design, it is much more difficult to optimize the system with an adjustable output compared to a conventional 1-stage design. As such, all PLiXiR DC power supplies have fixed output to provide the best performance.