"Mytek Empire monoblock power amps, with GaN based technology."



trinitrond was going to start this up but he’s mia. It deserves it’s own thread.

Here something from HiFi Blog on the new GaN technology Mytek Empire monoblocks, it’s got some get up and go into 8ohm and 4ohm.
Would have been good to see the 2ohm figure though, to see if it starts "wheezing" into it, or if it goes up substantially again from the 1000w 4ohm figure.

Mytek EMPIRE monoblock delivers no less than 1,000 watts of power to speaker systems with an impedance of 4 ohms. If the speaker systems have an impedance of 8 ohms, there is still a whopping 500 watts available.


04-07-2021 jwcondo 6:30am
Greetings from Medicine Hat Alberta Canada,
It does indeed use the 1.5 mhZ switching frequency. I am a dealer and I should be receiving the first one in Canada next week as they have landed on our shores.
Excited to experiment with all this new technology.
Happy Listening....John

soundlovers.ca
WOW!! That’s the only confirmed one with "1.5mhz switching frequency" beside the mighty $20k+ Technics SE-R1 and they "say" also the SU-R1000 integrated has

Can you reveal where you got this info? as I looked everywhere.
Cheers George
128x128georgehifi

Showing 2 responses by erik_squires

the input circuit is opamps anyway, which can be set up to have input impedance as high as 1M.


Higher impedance = higher noise, but 25K to 50K is more typical than 10K for a solid state amplifier. It’s not exactly low either to me... it is still 17x more than 600 Ohms.

I'm not surprised at all your preamps can drive 10K. ;-) Most should.
10K Ohms is too low for tube preamps? Since when? That’s relatively, but not absolutely, high. Low impedance to me is in the 600 to 5K range.

Please keep in mind that a "low impedance amplifier" is not the same as with low impedance speakers. The amps present a flat, resistive load. This means that there are no hills and valleys in the response curve like with a speaker attached to a tube amp.

Worst case scenario for most tube preamps is that you will lose a little bass due to the output coupling capacitor which is in the 1uF to 4uF range and a little maximum gain (which you don’t use anyway).

A tube pre with 1uF output caps could be down around 5 dB at 20 Hz (I’m in the middle of a few things so my math could be a little off). With 2uF caps around -2.9 dB. This may actually be helpful in the right room!

Look at this example:

https://www.stereophile.com/content/zesto-leto-ultra-ii-line-preamplifier-measurements

It handles 600 Ohms output just fine.  My point is, we can't universally exclude 10K input impedance amp from use with tube pres.  Some may do awful with it, but I suspect many will be fine.