All user reviews of 4/5 for the Palmer PDI 09

Already explained.
Liabilities, it is practical: it needs neither battery nor phantom power.
The ground lift is used to resolve the concerns of hum due to ground loops.

As already explained. I will say that the output level of the device is quite small but widely usable (basically like a micro dynamic recovery of speech) when it processes an output line.
No breath.
The three filter positions are rather caricatured, I think.
If used in a preamp output, it will not benefit from the work of the power section, where a sense of right and its more a response to the game a little different. But it may be a viable alternative because it provides enough clinical precision. Interesting mix in a charge.

As in any situation miking, it will surely equalize for an optimum yield. A flat, the sound is pretty loaded midrange and especially at the top around 3 kHz. Kind taken up by a Celestion V30 SM57 directed towards the center of the bowl. By positioning the "bright", it's worse. And inserted into the mix, you just sound like more than a pocket amp.
on the other hand, in "normal" position, after ascending the famous bass and declined in 3 KHz, we then present a sound, well-defined and rather realistic in any case widely exploitable.
Position "mellow" squarely cut the treble and I've never used. Perhaps for jazz with amps or rendering particularly acute.

To speak of pure quality, it will always be better than one taken with an old microphone placed in front of your HP or tear in a room without acoustic treatment. We have a real guitar sound very realistic. A blind test will silence the grumblers and the purists.

I adopted the HP simulators since the famous Red Box H & K (it'll be over 20 years, ouch). I own the Behringer GI100, which is active and also DI classic. I love the practicality of these tools are inexpensive, compact, and allow you to find your sound across freeing you from the elements such as room acoustics, the quality of the park or the talent of micro sondier.
I'm out of Red Box, too bland, but I keep Palmer and Beri have two different colors; the Beri is a bit dirtier and more dug in mediums, less precise but with a little more "air ".
In fact, we will choose one or the other depending on the amp you use.
After the concerts, I sometimes got positive reviews on my sound, but nobody ever noticed the use of these tools when I use them.

Approved.

For the adventurous, I also recommend the guitar preamp plugged into a Moog LPF or other synth. You tell me the news.

Passive DI simulator with HP and mitigation

Extremely simple to use: It is a branch with speaker cable to the output of the amp.
We use the exit thru to connect (always with a speaker cable) on the baffle and Out (XLR) to plug into its registration system.
You still have the signal sent to the housing is relatively high to obtain a usable output signal. For my part, I plugged in a small tube preamp.

The sound of my guitar and my amp is guaranteed. I found exactly the same sound that my 4x12. The sound is very natural and dynamic. I use only normal that the simulation is the one that suits me the most.

I use it for several weeks.
I used a PGA04 for several years and I prefer the sound of PDI09. In addition, I am no longer forced to disconnect / reconnect jacks when a sudden urge to record takes me.
Only drawback: you still have to put the amp loud enough if you want to get enough signal. Two solutions, use a preamp or a power attenuator after the Out of PDI09.
The price / quality ratio is excellent.
This choice I would do without hesitation.