Is a high priced Line Conditioner needed

I installed three dedicated lines with hot, neutral and ground for each dedicated line. My noise floor dropped dramatically, the sound is wonderful. low level electronics were originally all connected to Monster HTPS 7000 signature conditioner. Each amp had their own dedicated line. The I bought a Transparent audio Power isolator 8 conditioner which replaced the Monster and a noticeable improvement in the sound. Also, my house is the first house off the transformer and my house voltage is very stable. But, the Transparent definitely made a noticeable difference. I am a strong believer in connecting all low level electronics to the same outlet strip or power conditioner into a dedicated line, and the amps to their own dedicated line. You eliminate ground loops and the noise is significantly reduced.

enjoy

Why waste money on a High priced Conditioner for a dedicated line?

Exactly

Personally I wouldn't put anything in front of my amp. I use a power conditioner for the preamp and all other components. I also keep my video(tv & cable box) circuit separate from my audio. Video's audio I prefer to use toslink into the DAC rather than digital coax, from the DAC I prefer balanced or RCA interconnects to the preamp. I'm a 2 channel person for what it's worth.
On a budget I would look at the Furman Elite 'i' series over the monster, I believe price would be similar. Downside either way is they're both made in the orient? > laffs

Precisely Minor1.

those Monster conditioner products steal the current from your system, more to the point, power amps.

There is only one power conditioner that can really deliver, that won't limit a large power amplifier. It was made by Elgar and was for industrial/commercial purposes, so you have to find one used on ebay, and may have to get it refurbished.

It is mechanically noisy, so you have to place it near the breaker box in your house, and run the wiring from it to your audio room. You might have to have an electrician do the work.

However. It is easily the best made, and the 3006 can deliver a perfect sine wave at full load of 28Amps at 117Volts. Seems to me there is a 1KVa version as well. No noise, no distortion, no spikes. The principle of operation is sophisticated- well beyond what typically passes for 'high end'. It uses an isolation transformer, a precision 60Hz oscillator that is synchronous with the AC line, a power amplifier and a comparator circuit. If the output deviates from the reference oscillator, a feedback signal is created and applied to the feedback winding on the transformer- the result: a low distortion sine wave free of noise.

This is the only conditioner I know of that can handle a set of our MA-2s or MA-3s. Most conditioners I have heard mess things up even when presented with our M-60s as a load, so usually I recommend plugging straight into the wall unless you have an Elgar.