Preamps with balanced ins/outs and remote

Something to look out for if not already mentioned is that you need to be careful with inexpensive preamp claiming to be balanced. As Rower mentioned, many companies will install an XLR connector on the back of their unit an say it has "Balanced Connections" when in fact, it is simply a single ended input through an XLR connector to accomodate those with balanced cables. It is no different than a single ended RCA connection.

If you find a preamp you are interested in that claims to have balanced connections (regardless of price), be sure to verify exactly what type of connections they are.

I also wanted to add to the discussion of output impedance. It is true that the lower the output impedance, the better a preamp will drive most solid state or low input impedance amplifiers. Our Purity Audio Design preamps have been paired with Audio Power Labs amplifiers at shows with an input of 600 ohms and MBL amps with 5k ohms.

Another thing to consider is the gain of the preamp. To high (or even to low) of an output gain and you will not be able to realize the full potential of your system.

In regard to the different sound of cables I think much of this has to do with their construction and material. All cable companies will make claims but in the end, it is your system and ears that will tell you what is best.

Do some research on the product before purchasing to make sure the product is what it claims to be.