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Markbass LM3

Definitely not Talkbass gossip; Markbass recognised the subtle tonal differences between its class AB and class D powered amps when it introduced them and described it :-
View attachment 5119553
Whilst all Markbass amps share a common basic tone, a difference is discernible when doing a true side by side comparison.

Yep, I was one of those that posted the difference when the class d version came out. It was night and day to my ears.
 
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So... picked up the LMIII today... it's class D despite being made in 2010 in Italy :rolleyes:

Interesting to compare it to the LM800, the latter looks much more beefy
 

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So... picked up the LMIII today... it's class D despite being made in 2010 in Italy :rolleyes:

Interesting to compare it to the LM800, the latter looks much more beefy
That is an example of a LM3 that has been repaired by replacing the original class AB power board with a later class D unit. The QC label in the centre of the PCB shows it was made in 2016 with a pass date of 26 August 2016.
Screenshot_20230714_095941_Brave.jpg

At least you'll be able to compare any tonal differences between the first generation 800 watt and later 500 watt class D power amps.
 
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So... picked up the LMIII today... it's class D despite being made in 2010 in Italy :rolleyes:

Interesting to compare it to the LM800, the latter looks much more beefy

That's strange, I haven't heard of any class D LM amps that early on, I think they were introduced in 2012-13. I wonder if it's been repaired post-2013, any signs that this could be the case? It looks like most 'repairs' seem to involve replacing a whole board rather than fixing individual components, so they may have replaced the power supply with a newer one if that were the case?

Do you like how it sounds?

I've had 2013, 2012 and 2009 versions. I liked them all. I still have the 2009, not because it was class A/B, but because it was the latest I had.
First I had a combo (2013). Then a head (2012). Then sold the head and got a LMT800. Then sold the lot and went with Genz Benz for a while. Then back to LM3 (the 2009). It's a backup these days, but it's still a great amp. I'd be happy with either version, to be honest. Side by side I may have some preference, but class D or A/B, they all sounded great to me.
 
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That is an example of a LM3 that has been repaired by replacing the original class AB power board with a later class D unit. The QC label in the centre of the PCB shows it was made in 2016 with a pass date of 26 August 2016. At least you'll be able to compare any tonal differences between the first generation 800 watt and later 500 watt class D power amps.

well spotted!
 
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That is an example of a LM3 that has been repaired by replacing the original class AB power board with a later class D unit. The QC label in the centre of the PCB shows it was made in 2016 with a pass date of 26 August 2016.
View attachment 5124629
At least you'll be able to compare any tonal differences between the first generation 800 watt and later 500 watt class D power amps.
Interesting. My LM800 has a manufacture date of 2018, so I imagine it'll be much the same.
 
Interesting. My LM800 has a manufacture date of 2018, so I imagine it'll be much the same.
The designs are different so you should hear a difference side by side. It's very hard to compare if you don't have two identical cabs so you can switch very quickly between the two amps. I would describe my 800 watt Momark amp, which most likely uses the same power amp as the LM800, as being very balanced and accurate with a bigger low end whilst the 500 watt class D LM3 was more low mids forward punchy and closer to the AB LM3 than the 800 watt unit.
 
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