Downunderwonder

At 50/50 blend, or somewhere thereabouts, does the hum go away?

Start with it at minimum every time until you learn where it needs to be. Then start with it at the minimum every time because if it ever accidentally got bumped up to 20v in transit it's going to do damage.

A hum that goes away when you ground the bass sounds like the first pedal and the basses have different grounds. No ground on your basses?

Hell wasteful to be junking barely used batteries like that, or do you use rechargeable ones? The hungriest active I had would do a dozen gigs on a battery. That hungry bass gave up with juice left and the other could keep that battery for months. I am sure you could save a packet and whole lot of waste if you put in some research on what volts it really needs to maintain sound. I got a 4 pack of cheapie 3v buttons for scales. Expensive enough. Checked the 1st one. 2.5 v out of the packet. No more of those!

Two stories from the stables of AgedHorse come to mind that bury class distinction. When he was a more junior engineer he got fired for fooling all the audiophiles that they were blind auditioning a bunch of amps when it was the same amp the whole time. Later he was involved in developing the GenzBenz class D lined up to replace the class A/B. Iirc it was the same old preamp with both amp sections. Nobody could tell which was which no matter how hard they tried. Some amps have more heft than others but it's not the class of the amp doing the hefting.

Examples of hot XLR outs I am aware of: Quilter bass amps The Polish ones I can't remember the name of off the top of my head. The GK combos with self powered extension cabs.

Yeah, but how hot is your DI output? Not many are anything like Line Out which is meant to drive another power amp.

Hopefully it works out. XLR is not all same thing. The 'DI' is labeled as line out which is way far hotter than a mic. The interface unit is expecting a mic so I wouldn't be surprised if it is distorted to hell.

A handy trick with 900w Streamliners is to wire up your cabs to get a 16ohm load. Then you can push it and get the full output sag overdrive thing that was painstakingly engineered in without blowing anything up, including the patrons' hearing.

TB has a photo of the back of the prototype. No pre / post on the LINE XLR out. I guess it will still be hell hot for the average mixer. Needs a pad as well as the pre / post.

I do wonder if my Trace would sound better for adding some damping. It sure would suffer for the extra pounds when I can only just hoist it as it sits.

Even you would give a pass to a HPF equipped preamp. Nobody called me a guitard for having a raft of pedals as it made things more interesting, mostly in a good way too I will have you know!

Some Markbass 112 combo with matching 112 extension cab. Not strictly a "rehearsal room" as it was a rehearsal in a room that had a bunch of theatre seating. I'd say it gets used far more for rehearsals by the poyltech music dept than concerts, so I am claiming it.

Throw a blanket over it. If that's not enough throw two blankets over it.

He's sitting on his high horse lamenting that the view isn't really all that much better and dissuading the rest of us from his folly.

You can buy really good plugs and a piece of cable and get change from 10 quid. Even better, you will know for sure it is wired properly for rejecting noise as best can. Once you have made one cable you will never buy another ready made.

So he can use the amp to monitor instead of the PC speakers. I think the USB might be an input for play along on your combo? I dunno what you would get from a balanced mono DI going into a stereo audio input with a mono jack. DI isn't a hot signal as a rule. Worst that should happen is noisy. The correct way to wire it can be found here: https://www.ranecommercial.com/kb_article.php?article=2107

I can see @Bluewine in sequins and stripes.

The original had balanced XLR out. V2 has a balanced TRS 1/4". Maybe this one will have a level control, or less of a LINE out level that doesn't blow out the mixer, to go with XLR out.

What's the US equivalent of Glam? Do cover bands make a specialty of doing the whole enchilada theatre like you fellas?

I often recommend the Rumble.

Ya would think that but you would be wrong. Ever hear the story about little Johnny given a bass for his birthday? Pretty much that! All my experience prior was jamming with experienced folks at open mics playing on the residents' gear.

What kind of psycho goes after musicians at 50 quid a pop? Shades of Mick Mason.

I dunno about that. In my case I had a p!ssant practice amp that did me no favours when it came to a set of drums being involved. My first real amp was top notch gear as I had some savings and an offer of a well paying gig. One of the open mic hosts needed a bassist and I was well aware I was needing firepower.