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Messages - joecool85

Blackstar has thrown their hat in the ring for best solid state pedalboard power amp with the AMPED 1.  With 3 voicings, 6 "response" settings, 3 band eq, and built in reverb, this isn't a straight-forward power amp, or a modeling amp per-se, but rather somewhere in between.

100 watts of power, 8 ohm and 16 ohm compatible, on-board power reduction feature, and loads of connectivity available for output (speaker, headphones/line out, USB, XLR).  It also features two 9v output jacks to power pedals up to 500ma.

With an MSRP of $499 USD, it isn't exactly cheap, but it isn't boutique pricing either.
I looked up the manual for this and found it is a two button switch on a TRS 1/4 cable.  This just means it uses a stereo 1/4" cable rather than standard mono guitar cable.  Testing will be the same way, but you will go from the ground at sleeve (ring closest to the wire) to the tip or to the middle ring.
Quote from: Montywitha-Y on September 26, 2022, 04:53:59 PMI'd like to start by thanking you all for having me in your forum! I'm new to both solid state amps and to electronics builds. I am wondering if anyone here has a schematic or wiring diagram (makes noob blood boil just slightly less) for the foot switch that works with the Randall RG1003H amp head. It seems I'm deeply allergic to the idea of paying $100 for this foot switch (when they can even be found). If not, I would humbly ask if an owner of that foot switch could take a good picture of the layout and post it? Anything would help. Thanks, again!

I haven't looked this one up, but most amps just simply short the tip and sleeve of a 1/4" cable for the switch.  To test this, plug in a guitar cable, and then use a wire (or other piece of metal) and short the tip and sleeve - see if it changes the channel on the amp - it probably will.  If so, you'll need to determine if it needs a momentary or standard switch.  If it switches channel when you connect the two leads, then changes back to the original channel when you disconnect, you need a standard switch.  If it stays switched until you touch the leads together again, you need a momentary switch.
Fender has released a new addition to the Tone Master line, the new Tone Master Princeton Reverb.  For those that don't know, Tone Master is the moniker Fender is using for it's DSP amps that have a single model without any digitized options available.  The amps have analog controls on the outside and look almost identical to the amps they are built to model.  The concept is that you get the same looks, sound, and playing feel as a tube amp, but none of the weight, parts availability issues, and cost.  Take a look and a listen over at Guitar World.

MSRP is $899 USD and it looks like they are starting to be available already.
Amplifier Discussion / Re: 12w Marshall
September 06, 2022, 03:55:30 PM
If I could like this more than once, I would!  Please share results when you get a chance to build it.  I'd love to hear it play too!
No buffer needed between the power amp and the preamp (Bluesbreaker).  That said, I've never used a BB as a preamp.  You won't know if you like it till you try it.  My guess, you won't have enough tonal control.  You like the sound of them which is great, but you don't send it into a flat eq'd amplifier - you send it to a guitar amp.  Even when you set a guitar amp eq to look flat, it has a large mid cut and sometimes other shaping.
Amplifier Discussion / Re: 12w Marshall
August 08, 2022, 08:51:11 AM
Great work!  I split the topic though and made this it's own so it can be an easy resource for others later.
Quote from: Carriage on July 18, 2022, 05:38:17 AMParts have arrived from tayda.
You cannot view this attachment.

How's it sound?
Quote from: smadin on January 18, 2022, 07:54:56 PMThe great thing about DIY practice amps that run off 9V power is that there are so many to choose from! (The other great things are that they're inexpensive and usually fun and easy to build, of course.)

Off the top of my head:
  • The aforementioned Honey, of course, which I had a blast building. (and I'd definitely be interested in a Honey II with a different IC!)
  • The Noisy Cricket Cabell mentioned.
  • I got started with's Ruby, and their Little Gem mkI and mkII are also worth a look. They have some mod suggestions for their designs, as well.
  • Bruce Zinky's Smokey is as simple as it gets, it even omits the Boucherot cell from the LM386 datasheet's "minimal" schematic. (The Noisy Cricket page I linked also shows a couple of simple Smokey mods.)
  • At the other end of the spectrum, Electrosmash's 1wamp crams in all kinds of features. Looks like kits/PCBs aren't currently available, but full schematics, KiCad files, etc., are hosted on their forum.

I'm going to go ahead and revive this thread because I'm interested in a comparison between the Honey amp and the 1wamp.  Could you share thoughts on this?  The Honey amp has very similar circuitry, including the same lm386, transistor preamp, and BMP tone control.  The Honey's tone control is dialed in with different values though, mimicking the frequency response of a Vox AC30 top boost channel.  And of course the Honey uses the preamp for primary distortion rather than the LM386, allowing for use of master volume control while using high gain.
I'm glad someone else is enjoying playing with the PAM8302a boards from Adafruit - they're cheap, decent quality, and provide 1.25w on 8ohm speaker or 2w on 4ohm speaker, which is pretty great.  And real easy on batteries because it's class d.

At one point I had thought about making a class d version of the Honey Amp using this board or similar.  This idea has been put to the back burner indefinitely, but I do have plans for a larger class d amp in the works.

Also, I'm not a fan of a Tube Screamer as preamp but if it sounds good to you, there isn't any technical reason not to do it.  As a good starting point, I recommend something more like the Marshall Gov'nor:
Late to the party, but still here - we've found four new amps that were released during NAMM 2022.

Blackstar - Jared James Nichols mini amp (customized Fly 3):

Fender - Frontman 20G (Basically like the old Frontman 25R but without reverb and using an 8" speaker instead of 10"):

Line 6 - Catalyst series (New and upgraded versions):

Yamaha - THR30II (10th anniversary models in special colors):
Quote from: Loudthud on June 15, 2022, 05:05:14 AMInteresting that it uses an external power supply. The jack on the back looks like the same one used on pedals.

This is becoming quite common on small amps and heads.  The Yamaha THR series does this, as does Orange Micro Terrors, Hughes & Kettner "Spirit" amps, Vox MV50 series and more.
Quote from: willpirkle on June 13, 2022, 10:08:21 PMYep - I didn't get the name of the company who did all of them, but was told something similar about the power amps, and that each model was designed in partnership with each respective company, so there are differences in the preamps that could be interesting to study. Have not seen any schematics for any of them tho.

It is the parent company, Boutique Amps Distribution.

They own a ton of companies now:
Tone King
Quote from: BenGunn on June 03, 2022, 06:19:15 AMHow many posts do I need to create to get access to the PM?

Just 1 post.
Long known for their high gain tube amplifiers, Soldano has decided to dip their toe into the solid state arena with their new amp, the SLO-Mini 30.  The SLO-Mini 30 is a small 30w head, with two channels and an absurd amount of gain.  Priced at $249 USD it is also (by far) the least expensive Soldano unit.  Well worth watching the video!