The following are all the relevant A9X Q&A on all forums todate:

Hitec General Servo Q&A extract:
Q. What is the difference between an analog and digital servo?
A. The difference is in how the servo motor is controlled via the circuit board (amplifier).
The motor of an analog servo receives a signal from the amplifier 30 times a second or at 30Hz.
This signal allows the amplifier to update the motor position.
Digital servos use a high frequency amplifier that updates the servo motor position 300 times a second or at 300Hz.
By updating the motor position more often, the digital servo can deliver full torque from the beginning of movement
and increases the holding power of the servo.
The quick refresh also allows the digital servo to have a tighter deadband.
Recommended Reading:
Hitec Digital Servo Q&A
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. Aurora 9X Further Features Post 4477 above.
"1. Performance:
a. 4096 resolution (4 times better/ 2X better than Futaba and Spektrum)
b. Dual processors (one for programming, one for RF)
c. Re Engineered signal processing so the Optima RX performance is twice as fast (19ms frame vs. 41ms)
d. New Maxima RX's (Non Telemetry) have a 7ms frame which outputs all channels simultaneously
for the absolute minimum latency. (FBL version in the works)"

. Aurora 9X Latency, Resolution & SLT
The latency is essentially cut in half when using the Optima Rx's and when using the new Maxima (non telemetry)
RX it is 66% faster than that! 4096 Resolution as well! Dual processors are used so that the RF has one dedicated just to it.
SLT will open it up to a larger BnF market. - Mike.31Jan13.

. A9X Retail Configuration & Features
"The system will be sold in a few different configurations.
The Maxima Rx is for those that are looking for the absolute lowest latency.
The original A9 will not be compatible with the Maxima.
Another feature is auto switch select which sets the switch by moving it when in the menu.
The toggle switch does also work as on only when held when selected for the timer.
Flight counter: Counts the flights on a particular model by either power on, switch, or timer.
SLT: Compatible with any TX-R model made by G.P. or any company that utilizes the protocol
which we expect to expand significantly.
Hitec will not offer a stand alone SLT RX but future BnF "Hitec" branded models
(Many more planned) will utilize it thus keeping the cost down.
I'll post some screen shots of some of the new things shortly. - Mike 01Feb13"

. A9 & A9X - Latency
FYI: The reason the A9 latency has high was because of the decoding on the TX side from the gimbal to output the signal.
The single processor also had to operate the programming and the signal where now they each have a dedicated processor.
The 9X elimiates this cutting the frame rate with the Optima RX in half (Down to 19ms.)
When using the Non telemetry Maxima RX, the Frame rate is even lower at 7ms (Actually tested at 5.5ms!) - Mike 02Feb13.

. Conditions can be assigned to any
stick/position. - Mike 07Feb13
<span style="font-size: smaller">screenshot 1 post 4484 above
screenshot 2 post 4484 above</span>

. Non - telemetry Hitec 2.4Ghz Receiver Reboot Voltage
"Maxima has the same reboot voltage as the Minima, 2.6v.- Mike 13Feb13. "

. Maxima 6 &amp; 9 have same frame rate
"they are the same @ 7ms frame rate.- Mike 15Feb13".

. Frame Rate
It will be 4096 resolution with the Optima RX's as well. The latency is cut in half (21ms frame)when using the Optima RX's with the 9X
and then cuts it 66% more when using the Maxima (7ms) making it of of the fastest radios available.
More channels: We know... However, it wasn't an option at this time with the current platform but we are working on this for the future.
- Mike. 15Feb13.

. Latency - Perception
"Perception is a strong factor for some people. "Most" people will not notice the difference in latency and resolution but that doesn't
mean they don't think they need it. However, high level pilots will benefit as it brings the performance level up to, or better, than the top
radios on the market! Unfortunately we are currently limited to 9 channels but making the new radio faster with more resolution was
possible so we did it... what would you all be saying if we didn't? Damned it you do... damned if you don't I guess! " - Mike 19Feb13.

Alan T.
Alan's Hobby, Model &amp; RC FAQ Web Links</p>