One Problem With The Boss Katana Mini: The Power Supply
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- เผยแพร่เมื่อ 22 ก.ค. 2024
- There is One Problem With The Boss Katana Mini: The Power Supply. In this video, I will discuss the 3 main power supply options and DEMO how they sound! Sign up for my FREE NEWSLETTER for exclusive videos about this and other great amps: mailchi.mp/f93b8bb33c64/get-m...
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The Boss Katana Mini can be battery powered with 6 AA batteries, or with a DC power supply (not included). It is a 7-watt amp with a 4" speaker. It boasts a multi-stage analog gain circuit that includes a 3-way switch to select the 3 amp characters: clean, crunch, and brown.
The Boss Katana Mini also has a 3 Band EQ as well as a smooth delay effect with time and level controls.
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Question of the Day: What else would you like to know about the Boss Katana Mini amp?
Can it be modded to have an FX loop send and return?
Hey, there is a ground screw 🪛 behind the Katana mini, have you tried pulling a wire from it and grounding it?
I purposefully bought the Katana because it was battery powered. I have bigger amps (and a DAW at my computer) for when I want to do more serious things, but these portable battery amps are perfect for little jams or practice sessions where I don’t want to drag heavy equipment around.
I do recommend investing in rechargeables for anyone going this route. Amazon Basics brand ones are surprisingly good if you want to go cheap.
Got a Katana mini not long ago. Have been running it on battery power and not noticed any issues. I'm going to be listening to it closely when I get home an use it.
Thanks you for the detailed review…i dont know other youtubers dont care to inform is about this..thank you so much… everybody should be aware of this😊
My Katana does exactly the same. For some time I wondered if I had some earth problem in the household wiring, but I have checked in different houses with the same outcome. The amount of noise does seem to vary at different times through the day. You have to imagine there is some sort of interference happening somewhere though I have no idea. On batteries its absolutely fine.
Thanks for the demo. I am considering purchasing this amp to get around the buzz problem with my current amps. I never had a problem with buzz until I recently moved. As mentioned in another comment the problem is the wiring in the house. My old house had original wiring except for the addition of 2 circuits. Dishwasher and A.C... My new house has LED lighting, dimmer switches, and many added circuits which have contributed to the overall problem. Emi and Rfi. I have no problem with the tv or stereo. I have countless hours trouble shooting and think the only solution is to totally rewire the house or move. Neither is a realistic option. I am thinking to mic the amp like you did and use battery power. The buzz you experienced in your vid using battery power could be Rfi. The Roland adapter you used had a ferrite choke on the cord. The generic adapter probably has minimal built quality and filtering.
I'm wondering if you can use a cel power bank with a ripcord. It works decent on my Spark 40. Makes it portable too
Update - received adjustable power supply from Amazon - digital led display $17 - and results are great as expected - the tiny little buzz when not playing doesn't bother me at all - it's very minimal and I prefer using a noise gate anyway - still dialing it in - runs fine on just under 6v - 5.85 right now -
I had the same issue. I purchased an adaptor, plugged it in and I discovered some sort of noise. Absolutely annoying. I then returned the adaptor and started using batteries. I have a question. Does adding a Boss noise supressor help ?
Have you tried a guitar with humbuckers instead of single coils? That might fix it.
My single coil Tele hums when I use my Marshall 10 watt practice amp, but when I plug it into the Katana mini, no hum at all!
I can confirm it does not fix the problem. Boss katana mini has grounding problem, which can be fixed easily by using dedicated (it's already there) screw on the back.
awaiting delivery of this amp.. i wonder if one of those cheap clamp on chokes on the power cord would help
Would leaving the batteries in while plugging in the power supply cause any issue? I'm not sure just something I noticed. Batteries still in while power supply connected.
Mine have a worse humming when i use the power supply. Any advice? Please help 😥
Please suggest any adaptor for boss katana mini and which ones should I avoid using, and why?
Great video! Useful one!
Online link for the details of Roland AC adapter?
Thanks for the posting this video. I am about to purchase this amp so I found the video very helpful. 👍
One problem with BOTH of the power supplies you used (I see the one Amazon recommends) is that they are both 2-Prong plugs which do not ground properly. You need to use a 3-Prong plug and a (Correctly grounded) 3-Prong wall socket. Note that not all 3-Prong wall sockets are correctly grounded either but this is easy to determine using a simple multimeter (Google how to test the wall socked for proper ground) If you are plugging into a power strip you need one with isolated sockets.
Also try removing the batteries before you connect an AC power supply.
Lastly, a question: Have you tried a guitar with humbucking pickups? My Tele buzzes through any amp I plug it into if there is even a small amount of gain, but none of my guitars with humbuckers buzz when swapping them out with the Tele.
Does other power sources still require batteries or can they be used by themselves?
If I understand correctly, the reason it buzzes less when you touch the strings is that doing so grounds yourself. I'm not sure why using a power supply vs batteries would make this worse, but I do feel confident in saying that it is related to grounding. If I'm totally full of beans about this, feel free to correct
That is because there is a chance that the wall outlet is not grounded correctly, hence the noise, or the guitar electronics are not grounded or appropriately shielded. The latter hardly matters.
@@dragonAwkwardit shows a two prong to dc in for the device. It’s probably not grounded, unless my information about electronics is very wrong.
@@dragonAwkward I was wondering while watching if he tried it in any other outlets
@@bubblepipemedia3414 oh yes my bad. Then definitely has to be an issue with guitar shielding or in the amp circuit
@@dragonAwkward
My best guess would be dirty power / other things on the same breaker. I had to get an isolated line to clean my stuff up. Now the only noise I get is interference heh (as opposed to electric noise creeping in). Ground hum may always be an issue with any single coil going into an outlet though, given that that's the cycles at which we get power (60hz)
With official Roland power supply I get buzz on high gain. Do hum destroyer boxes fix this? My guitar plus directly to amp
is there any performance downside when using it on batteries
Thanks for this useful video!
If you have an amp plug into a power socket and you have fluorescent lighting in that room or in the building the function of the fluorescent lighting tubes will produce a buzz through the entire electrical circuit they can come through your amp
Shouldn't you Take Out the batteries when you Plug it In? Like any pedal. You don't leave the battery in and plug in an adapter. Or does it not work at all if the batteries are out of it?
What mah of rechargeable batteries do you prefer?..1300mah or 2500mah each cell
Is this amp okay with acoustic guitars and ukulele
Hola, probaste conectar el cable A/C sin portar las baterías?
Creo que por ahí va el problema. Recuerdo que una vez tuve ese problema con una radio portátil, al parecer es una sobrealimentación del sistema.
Se que ha pasado mucho tiempo desde que subiste este video, podrías decirnos si solucionaste el problema?
Saludos.
I tried it out with a solid grounding and a powersupply. In the back of the boss mini there is a grounding connection. If you hook it up to a solid ground the noise reduces drasticly. Hope it helps. Chears
Where did you hook up extra ground?
@@brianobrian9334 silver screw on the back close to power inlet is an earth connection ( ground ) just put a wire on it and link to some big lump of iron ( radiator ) you'll be good.
I have Roland PSA-230ES AC ADAPTOR and it's clean as hell
Has anyone tried this amp with an acoustic guitar and how does it sound?
Thanks
can i use it with a bass?
you tried reducing the tone knob of the guitar? its a general problem of small portable amps btw
Can you use plugins on this?
hello, one question, do you think the PSB-230 EU is a good option?
Greetings from Peru
I own this amp. I have two so i have more volume and run in stereo. I use my power bank to power it amd I batteries on hand as back-up. My rig .... pedals, amp and p.a. speakers are all powered by rechargeable batteries. My pedals and Boss Katana Mini are powered by my 2 power banks. One for the pedals and one for the 2 amplifiers. My p.a and my mixer are also powered by thier own rechargeable power source. No hum or buzz.and no need to plug into anything....at least not right away. On my pedal board has a pedal that has built-in grounding to fix any grounding issues. My power bank also has gounding too and reduces noice.
When you strum the guitar and want a clean sound just keep a part of your hand on the bridge very lightly to ground the guitar hum. I hated electric guitar coming from an acoustic background. Now that I’ve accepted the hum and what it takes to reduce it I find electric guitar really fun.
Can i plug in two guitars into this amp
I’ve seen some people hook up a noise gate to one of these & it seemed to take it well! Perhaps that would solve the issue!! Thinking about getting one of these bad boys
Me too. Did you get one?
Exact same issue. The Amazon power supply is unusable imo. I have a humbucker and it still buzzed like crazy. Debating on sending the whole amp back to get a bigger one with a ground plug. Battery power sounds fine though.
I use a small 9 volt adaptor. Without the Batteries Works great No noise. Love this amp!
Can you please tell me which adaptor youre using? I want to buy one, and Roland psb-120 isnt available in my country rn. Any suggestion would be a great help!
@@himilkashyap9939I ordered one off Amazon. I didn't have a problem aswell. It was a boss C something power wall adapter. 9v
Well, when I take the batteries out of the amp and plug in the adaptor it doesn't work and I can't see the ON light goes on. Why's that?
Does this amp work with ac supply just with the batteries on it ?
Its definitely a grounding issue as well as not using a guitar that has humbuckers.
Yep. Had CODE25 with no ground and strat with single coil pickups. Same issue.
Yours is the first comment I came across that went to the first thing which came to my mind - single coils are always susceptible to this, certainly far more than humbuckers. Thereafter, there are multiple things which can introduce noise to varying degrees: power supply, nearby interference, amp, leads, etc, etc.
I have a d'addario power supply with which I have noise but it is solved by using the ground screw on the back of the amplifier.
Apart from interference with the EM radiation of the electric cords, different power supplies apply different circuitry to sieve AC out, which can seep into the amp. You can be sure that the branded Roland supply is of a much higher quality electronic circuitry than a generic one costing less than one third of its price...
this is bound to happen on a battery-powered amp. Grounding is something you can never get rid of in cases like these. Over that, are you really looking to record using a practise amp? An audio interface would be the better choice, after all you will get on at the same price
Interesting video, thanks for that. I am only using my Katana Mini for a little practice amp, so that slight sound doesn't bother me, I don't want to constantly buy new batteries, so eventually the Boss PSB-1U 9v adaptor will pay for itself, I will continue to use batteries, but only where I can't plug into the grid.
Same results here! Battery power is the best...!!! That was my main reason for the Mini..
Default (wrong) answer is grounding issue. Wrong in this case. Beginner guitarists always say hum is grounding. The problem is that you're using an unshielded power supply and whatever circuitry they are using is putting out a tonne of interference. To test, move further away from you power supply (with a lead) and check if it fades. Your strings act as a giant antenna.
How about if you put some aluminium or copper tape over the outside of the 9v adapter? (obviously not covering any vents that might be on the adapter to let heat out).
Hey will using a surge protected extension cord fix the issue any ideas on if it fixes the grounding issue?
Are those fluorescent lights?. Also try middle position on pickup selector.
thank you very much
Do you know how many ohms this speaker is, 4, 8, 16? A guy put Jensen 'mod' speakers in his portable $400 keyboard and now it sounds like a $1000 keyboard. I have 2Katana mini's for 3yrs to my stereo Digitech rp3 (yes 1997 dinosaur)... but still awesome and those Jensen 'mod's are like celestion 'mini vintage 30's in my opinion. new sub
do you have power strips or power sockets with power surge protection?
I had not thought of that! I just went and compared plugging into the wall vs. plugging into my power strip with surge protection and unfortunately the buzz is still the same.
Thank you for the idea though (and thank you for watching and commenting)!
well i got a battery charger that charges any type of battery and all at once so i dont stress out if i work mine with batteries or not its useful having one around cheers
3:40 using a katana mini to record?
For my fellow Canadians this will set you back about 150 at Long&McQuade
You have capacitance and you just touched your grounded strings making a filter of sorts. I bought the Katana mini because it fits in a suitcase and with Roland's universal adaptor I can use it in the US or Africa or where ever else I end up. Other than my Telecaster this little amp is my favorite piece of practice gear.
Thank you for watching and commenting! Great insight!
Well - 'finally pretty much got my axe back up and replaced the most awesome amp I ever had with a simple little Boss Katina Mini that is smaller than a kids lunch pail and runs on batteries no less and as the batteries run down I've noticed it gets sweeter sounding as the led light gets dimmer - hmmm - GOT and idea! Once I get a power supply I think I'll get an adjustable voltage that goes 0 - 12v and use it like Eddie used a variac.
If you guys recall he kept how he got his sound a secret by saying he cranked the voltage UP to 140v and watched the tubes melt lol - BUT in reality he turned the voltage down to 60v and that is the real secret (I wished I'd have known back in the day) as my Carvin amp sounded best on half power and cranked all the way up.
So will update you guys on how that works out. Anyway now I have no effects other than a slight delay that is built into this little mini (which is PERFECT as I hate reverbs esp those old springers) and no loading software into my computer and linking up the amp and learning all the parameters of EQ -ing, distortion, compression, phasers, flangers, chorusing, etc etc etc just simple bass mid and treble gain and master (along with my Hi Pass - Lo Pass wired into my guitar with push button pickups that I can use any combo of bridge mid and neck or all at once if I like) and I'm getting fabulous tones! I'm really amazed and now concentrating on just playing with SIMPLE adjustments which is exactly where I need to be as my axe was broken in my move and had been collecting dust on the wall while I was very busy with other life matters - but hoping now I can spend some real time getting my licks back.
This is classic 50/60 Hz ground hum. Only way to get rid of that is by buying a power adapter which has a grounded plug (the one that goes to the socket) and then an isolated output.
Today i went to take a demo of the katana mini. I too faced this with cheap 9v supply. Thinking to buy this or not. Can anyone guide me?
I've bought it and its the perfect practice amp when battery supplied, tho i haven't tried it using power adaptor but i can say it would work just fine, some amount of noise wouldn't bother that much. Also it has great distortion!
@@himilkashyap9939 thank you so much. I have also ordered it, cant wait to play.
You must have a dirty power line somewhere. I have this problem in my house in the UK. Are you using pedals powered by the mains (not sure what you call it in the States… grid maybe)? That will do it!!!
I run my Katana Mini off of rechargeable batteries and all of my pedals are powered by a battery pack and a little Joyo adapter that connects this to my 8 way power brick. No buzz whatsoever 😊. I can easily play for a couple of hours a day for a month before recharging
Interesting video, but this doesn't sound like a problem with the Boss Katana Mini, but rather a misunderstanding.
does the battery power disengage when you plug in the adapter?
Any plugged in amp is going to hum. It's ground loop noise from the rest of your house. The battery only mode isn't connected to ground.
I spent around 200 hours messing around with all the eq in the studio. It was like Skyrim came out for me but on the guitar. I was addicted to finding a great metal tone and get rid of that buzz until a month later I bought a 7 string. After a few hours on the new 7 chugging chugs I dropped my phone and it tweaked a setting and all of a sudden muted the buzz. I also got some feed back from the phone as well. So there I am happy as can be so buzz at all when I take me hands off. It comes and goes but I perfected the no buzz tone. After many more hours of trying to get the right metal tone. Because that mistake made it sound like you got water in one ear. I don't believe it's a ground issue. That amp is very sensitive to other devices around you. I would not allow anyone to turn the TV on while I was playing. Nor would I have my led showroom lights on because of the IR receiver. I would only have a led lamp on in the room and my phone. I swapped the regular light bulb for led Incase it may had interference. I spent months figuring out as to why this kept happening. I went as far as buying more expensive gold braided cables. It's just a sensitive amp. My main is a 2010 Gibson LP studio alnico p90s with 11 gauge cobalt strings I found to be the best so far.
Also I have the mk 50
He also probably have fluorescent light in that room. What a numbnut.
F****k yeah !!!
Cube user I like to use rechargeable batteries it dead quiet . Same problem with guitar pedals, and other devices that are plugged into a wall circuit. Even other Roland or boss power supplies. I like guitar pedals run on batteries too.
What happens when you take out the batteries when using the adapter?
That can actually be the problem and we will never know🤣
Wish you could demo the orange crush/fender champion with this guitar too. Im torn between the two and I have a similar tele with p90 neck haha
I am working on a demo of the Champion 20 with my tele right now!
I have exactly the same issue with the Blackstar Fly.
How have you enjoyed your Blackstar Fly? Thank you for watching and commenting!
You have to find a power supply with a ground or highly filtered ground
That is a problem of your mini Boss Katana not all the units on sale. You need to return back that damaged unit from factory !
Strange it doesn't come with an adapter.
Actually there is a grounding panel/screw on the back of the Katana Mini.
@@landon.la17 Coneect it to ground!
that's why i never understood the point of a battery powered amp,
the reason it makes a slight buzzing noise is because of the battery compartment where the battery goes. when you plug in a power supply, it interferes with it. i had a Boss Katana Mini, and i got annoyed with it after awhile. it sounds pretty good for a small amp, but you can get other amps that are small like this that don't require a battery. now i watched a few others review this and i don't hear that buzzing, but i had it and it does buzz.
@@mts0628 i ended up selling it, turns out i had a faulty one. so maybe i had a bad one.
I bought a 9V adapter in Amazon, you can look it as "bluecoil adapter 9 V 670 mA", and problem solved, no noise and power unlimited...
I double checked with an electrical engineer n we're convinced the cheap power supplies bleed some AC noise, which causes the hissing. It's not a grounding issue.
Thank you for taking the time to check that out and comment!
This amp isn't for pro-recordings
This amp for fun and practice =D
So.... I think this noise isn't important
It is a grounding issue. Something isn't shielded properly. On the otherhand, it's quite possible that you are simply over-thinking this. By the way--Amazon sucks.
Regulated vs Unregulated power supply. Batteries are cleanest because it's DC to DC.
You don't need that big Roland brick! The ubiquitous Boss PSA-120 9V adapter has no noise at all!
Pickups bro=humbuckers s are less sensitive to 60 Hz hum
single coil pickups have buzz and well guess what cables also allow some buzz expecially that junk one your using on the guitar and all amps have buzz , the adapter you first pluged in ok we all heard the buzz and walarts like these power supplys are not grounded and dont need to be also you not supposed to have the battteries in the amp when using a power supply like holy hanna . some power supplys filter out the noise better then others to there is another reason why your getting some buzz witha power supply but lets see if you can fiquire that out on your own becuase that iam not going to tell you why it happens
Thanks for confirming that the power supply not recommended by the manufacturer doesnt work right.
Rechargeable batteries
About power supply (PS)... Almost all amps with electric source always like that, especially no ground terminal, like that PS. It's normal... pLus... Your guitar is single coil which has greater noise. Try with humbucker coil. I believe it will be better.
Anyway... If you record something, use good pedals and amps. Not traveling amps like katana mini, blackstar fly, etc...
Don't be silly: when you're not touching the strings what you hear is the strings vibrate, and when you touch the strings you don't hear them because you're holding them still so they can't vibrate. It has nothing to do with AC hum. You will always hear a little AC hum when you use a single single coil pickup or a humbucker that can be split into a single coil, and that's actually pretty cool. Listen to Stevie Ray Vaughn or Jimmy Hendrix during quiet passages: you'll hear the humming from their single coils, and it sounds good because it gives you a sense of proximity, like you're just sitting right there a couple of feet from them while they play.
So if this is your only issue....it must be a sick amp. I agree, if you're recording with that amp...you probably won't get a top 10
your guitar is not grounded correctly this is a common issue , the amplifier when plugged in to any mains supply will radiate some EMF , I always fully screen all my electric guitars to solve the issue
To be fair, this is a spontaneous jam amp and it's unlikely anyone would use it for recording. For the price this seems like an awesome amp and still cheap even if you have to purchase a PSU.
Mine came with a power supply..=\
Got it from sweetwater.
Not the only problem you can’t hear the phone if you connect it for backing track
No need to put battery.. when you using power supply.. try to use power supply only w/o battery..
Of course there's noise when you have fluorescent lights in the room.
I think you must use a guitar with humbucker pickups to solve the problem
power not a problem. but its missing bluetooth. boo. I have to mod it to add bluetooth
adptor plug in more than btter battry
i have the orange mini its a funny little speaker nothing awesome but it takes 9v batteries like my acoustic and i also use it as a laptop speaker with aux id say it serves me well , but if i want a serious sound i play on my mustang 25
Very cool! I like the idea of using the mini as a laptop speaker!
@@5MinuteMusic mine has to be connected with aux and also have a guitar wire plugged to work properly even without having the guitar (electronics are crazy lol) anyway you wont be disappointed it will outperform almost any bluetooth speaker in the same price
Having to pay for batteries is no different than having to pay your electric bill. The amp is 100 bucks, no ridiculous inflated recurring costs apply
You must not play much metal cause the buzzes and hisses and white noise become a part of the music--LOL
This is so helpfull, I'm buying batteries to test it, I was thinking about taking it to a tech.... I already hate it BTW....
Can you do , dive bombs with it
It’s called 60 cycle hum
Or you have a grounding issue
Don’t buy cheap adapters
It is a grounding issue.
Just ground it!
A simple cable from ground in katana mini to ground in the outlet.
Stop bother about boss katana, just think a little more pal.
it's due to grounding and parasitic capacity of your body