Jump to content
Left leaderboard
HazBeen

NPAD: GSS Sumo 1000

Recommended Posts

After acquiring and really liking the Mesa Subway Preamp pedal, I decided I would like to buy a Poweramp - ideally small - to give me a small but powerful gigging set

Ultimately ended up buying this: GSS Sumo 1000

Thus far I am blown away by the size and power. My Mesa MPulse 600 is a very loud amp, the Subway/Sumo combo is easily as loud whilst giving me the Mesa tone I like at a fraction of the weight. Pretty good on “girth” too!

Still needs lots of road testing etc, but so far so good!

Edited by HazBeen
  • Like 3

Share this post


Link to post
Share on other sites

Excellent! Do please report back after a gig or two?

 

I'm a huge fan of Didier's products, pleased that he's getting the sales that he deserves!

Share this post


Link to post
Share on other sites

That is absolutely outrageous! I'd certainly be intrigued to hear how you get on with it. Also if it's really 1000w or they've cooked the books and it's only 400.

Share this post


Link to post
Share on other sites

I also own an Mpulse 600 with a Berg CN212 but have just bought a Mesa Subway 800 which has been very impressive.

For a number of gigs just lately the Mpulse 600 in the flight case has stayed at home just due to the weight factor and basically not wanting to the M pulse out in the rain and snow :0)

Interested to hear how your new power amp works out. 

  

Share this post


Link to post
Share on other sites

Of course there is not a full spec on the website and those power ratings at 0.1% distortion are impressive. I would question whether it could maintain those power levels being passively cooled.

A class D amp with switching power supply Is usuall about, 80% efficient meaning it will dissipate 200 watts or so. Imagine putting a 200w lightbulb in that small box. Efficiency is quoted at full power but the dissipation is not linear. Much of the wasted energy is still wasted at low power.

It is possible to make a. powerful amplifier very small but I would like to see a full specification before I believe the power outputs claimed.

Share this post


Link to post
Share on other sites

Okay, so I have done a gig with it and two 3 hour band rehearsals. Time for some further feedback/intel.

Firstly I am pretty sure this D class Power Amp is at least in part an own design, so it is difficult to compare directly with a “normal” Ice/B&O. The combo Subway/Sumo is most definitely louder than my Darkglass M900 and it has zero problem to keep up in full band setting with ample headroom to spare, I was unable to turn volume knob past 60% as it was just too loud.

I have also been changing from Sumo to Mesa M600 fx loop in to compare the Sumo against 600w Mosfet. The Mosfet is slightly warmer and has the typical mosfet low end girth, the Sumo is very transparent and responsive and actually seems to cut through a little better with the same EQ settings on the Subway. I have tried a Subway 800 and “from memory” the Sumo/Subway combo sounds very close to the 800 and most certainly is as loud and has the same authority I liked in the 800. I do use the deep switch with the Sumo, not with the M600.

I would say the Sumo/Subway is about as loud as the Mesa M600. Like most D Class amps I doubt the Sumo gives the full 1000w all the time, but it is certainly not lacking in any way, it is crisp, has enough weight and has consistent volume/tone.

I use Tecamp L212s that have a wide frequency response, the Subway/Sumo is a good match.

The unit is passively cooled and does get hot, after a 3 hour session it is quite warm to the touch but not mega hot and when switched off cools down quickly so heat dissipation seems pretty efficient.

What I really like is that I now control both my amp and DI sound from my pedal board, and clearly I can use any amp with an fx loop as power amp so we are talking consistent sound/setup regardless of venue.

Time will tell if I start missing my full sized Mesa, but for now I am very very happy and the Sumo is delivering the goods. Very impressed, especially given it’s price point.

Some pics:

https://imgur.com/gallery/ohjQF

  • Like 1

Share this post


Link to post
Share on other sites

Hello Hazbeen

I'm very interested in this Sumo. Please keep your feedback about this.

I see some dirt/overdrive pedals on your pedalboard. How the Sumo works with this pedals? 

Share this post


Link to post
Share on other sites
1 hour ago, acroxixo said:

Hello Hazbeen

I'm very interested in this Sumo. Please keep your feedback about this.

I see some dirt/overdrive pedals on your pedalboard. How the Sumo works with this pedals? 

It copes really well, I stack a lot of dirt and it all came through as articulate as I expected. But that undoubtedly is also due to the Subway pre which is a great bit of kit.

  • Like 1

Share this post


Link to post
Share on other sites

Very interesting and caters to an oft requested niche, hope he follows through with the necessary FCC certs so we can use these legally in the US.

Share this post


Link to post
Share on other sites

So I have done a few shows with the Sumo now, so final instalment.

I continue to be amazed by the power, sound and portability of the Mesa/Sumo combination. Crank it half way up and your guitardist will be begging for mercy (assuming you actually have some speaker area, like my 2 212s).

Monday I tried my old M600 again, just to see if hearing it again after a few weeks would change how I percieve Mesa/Sumo. Answer, no... it is a great amp and a tone I know and love, but I also love the Mesa/Sumo tone and they are not far apart tonally.

Overall, the M600 (which is my "go to" and has been for many years) is a little richer (tubes/mosfets) and has more elaborate EQ options but the difference is very small. Much smaller than the Darkglass M900 (which I have now sold BTW), Genz Benz, EBS D class heads I have owned before.

RESULT!

 

 

  • Like 1
  • Thanks 1

Share this post


Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.


  • Recently Browsing   0 members

    No registered users viewing this page.



×
×
  • Create New...