Amp modellers/IR loaders and latency

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Amp modellers/IR loaders and latency

Post by adrian_k »

I've just bought one of these *cheap guitar processors/amp modellers/IR loaders/multi FX boxes. I think the sounds are pretty good actually but one thing I notice is a very very slight latency in response. I've had various digital multi effects pedals over the years and not noticed this, but it could be because I am playing this at much lower volumes than I would have done in the past, and so can sometimes hear my strings acoustically as well as amped.

Any of you have more expensive (or other cheap) boxes and notice this? It's annoying and a shame because for the money I think it's a pretty good little box for noodling around and recording at home.

* I suspect this is the answer to my question ;) FWIW the unit in question is a Leo Jaymes Silverbox.
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Re: Amp modellers/IR loaders and latency

Post by Wonks »

*Leo Jaymz

https://www.amazon.co.uk/Portable-Multi ... B0D8Q1FHBK

The fact that it's rechargeable will probably mean it's a lower-powered processor compared to a lot of others, so latency could be greater.

You could always put it in a loop from/to your DAW and measure the latency with and without it in the loop.
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Re: Amp modellers/IR loaders and latency

Post by adrian_k »

Good point, I’ll give that a go.
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Re: Amp modellers/IR loaders and latency

Post by adrian_k »

Wonks wrote: Tue Jan 07, 2025 10:26 am *Leo Jaymz

Of course, gotta have a “z” in there somewhere, this is 2025 🤣
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Re: Amp modellers/IR loaders and latency

Post by shufflebeat »

z0z5?
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Re: Amp modellers/IR loaders and latency

Post by Wonks »

adrian_k wrote: Tue Jan 07, 2025 12:59 pm
Wonks wrote: Tue Jan 07, 2025 10:26 am *Leo Jaymz

Of course, gotta have a “z” in there somewhere, this is 2025 🤣

Time to become Adrian_Z then. :)
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Re: Amp modellers/IR loaders and latency

Post by Sam Spoons »

I'd love to read a review when you have time, it looks like a useful bit of kit for jam sessions, no need for mains plugs etc...
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Re: Amp modellers/IR loaders and latency

Post by adrian_k »

Wonks wrote: Tue Jan 07, 2025 2:32 pm
adrian_k wrote: Tue Jan 07, 2025 12:59 pm
Wonks wrote: Tue Jan 07, 2025 10:26 am *Leo Jaymz

Of course, gotta have a “z” in there somewhere, this is 2025 🤣

Time to become Adrian_Z then. :)

Tempting 🤔
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Re: Amp modellers/IR loaders and latency

Post by adrian_k »

Sam Spoons wrote: Tue Jan 07, 2025 2:57 pm I'd love to read a review when you have time, it looks like a useful bit of kit for jam sessions, no need for mains plugs etc...

Sure I’ll put a few words in this thread later. I bought it as something I could use in my music therapy sessions (I tend to work at clients’ premises), but also as you say jam sessions/open mics.
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Re: Amp modellers/IR loaders and latency

Post by Sam Spoons »

I made a short power cable to use two Rockboard 9V power packs in series to run my Headrush Gigboard. It works fine but it's a big beast and the batteries are still dangling off the back.
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Re: Amp modellers/IR loaders and latency

Post by adrian_k »

Sam Spoons wrote: Tue Jan 07, 2025 2:57 pm I'd love to read a review when you have time, it looks like a useful bit of kit for jam sessions, no need for mains plugs etc...

A quick review of the Leo Jaymzzzzzzz ;) Silverbox:

Overall:
Small footprint, metal case, feels pretty solid. Rechargeable internal battery, claims 5 hours playing time. Most I've tried is 2 hours continuous and the indicator looks like it dropped to 75%, but this may not be linear.

Connections:
- Gtr in 6.5mm TS
- Mono out 6.5mm TS
- Headphone out 3.5mm TRS (but signal appears to be mono - haven't checked every patch though)
- USB C for charging and input to computer (assume this is acting as a basic audio interface)

Module Architecture (all mono I think):
Gtr in->
OD/Comp/Noise Gate->
Amp sim (15 guitar, 5 bass)->
Modulation (choose Chorus, Phaser, Term, Flange, Vibrato, Univibe, Filter)->
Delay (choose Analog Ducking, Tape, Dual, Lofi)->
Reverb (choose Room, Hall, Swell, Spring, Shimmer, Cloud)->
IR Cab (15 guitar, 5 bass)->
Signal Out

Front panel:
Footswitches for patch up/down (press both for tuner)
Module selection buttons - light up when module on, and used to select module for editing
Master volume
Rotary parameter knob, push to select, turn to edit, hold to save patch.
Small colour LCD screen showing patch and status of each module, and when in edit mode show parameter values.

In use:
I found it very easy to edit and set up patches. Manual is small but clear. There are 40 factory presets and 40 user locations. My use case is not for gigging live, but if it was I would set it up like my first multifx pedal with adjacent patches for a couple of clean sounds, a crunch/rhythm, and overdriven. What would be difficult would be to switch particular effects in and out during a song unless maybe you had the unit on a stand (it's very small and light) and could reach by hand. Either that or set up patches specific to songs eg Fender Twin with delay and Fender Twin without delay.

I'm finding it pretty easy to find sounds I can use. So far I've paired it with my DAW setup and a portable Bluetooth speaker (Bose Soundlink mini). In the DAW I tweak amp parameters by playing along with known material. For some reason the cabs are all initialised as 20Hz-18KHz, I found I needed to reduce the speaker bandwidth quite a lot e.g. to 40-7K depending on the IR as the HF was painful, especially on distorted tones. A problem I've had in the past with digital multifx is getting a satisfactory clean tone, both in terms of basic sound and comparative level with higher gain patches, but that hasn't been a problem here. I'm still fine tuning the crunch and high gain sounds, but even through the little Bose they are very workable for quietish jam sessions. I did a quick test of the bass amp/cabs into the DAW and found them very usable. But I'm not a bass player :)

I haven't got a FRFR speaker to try this with, it would be interesting to hear how it scales up. Maybe later. For now I just need something quick to set up, runs on batteries and gives decent sounds, and this unit does it.

This thread was about latency - I should say that when playing on headphones I don't experience any latency, so there is some other psychoacoustic thing going on.

I can't promise but will try to put a few sound samples up.
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Re: Amp modellers/IR loaders and latency

Post by adrian_k »

List of amp guitar models:
- UWE Twin (don't know what this is - assume Fender Twin?)
- UK-C30 Normal (assume this is an AC 30, no top boost)
- MarsVM410 (Marshall JVM)
- Victor Mars (Victory amps?)
- BritPLEX_100 (Marshall JTM 100 watt)
- MarsFD100 (Marshall AFD?)
- EagleSavage (ENGLE Savage)
- TH DiselHgn (Diezel?)
- PvEV5150 (Peavey EVH 5150)
- FORTIN_CALI (Fortin Cali)
- MessMktCln2 (Mesa of some sort?)
- CA_tweed (Mesa California Tweed)
- BogSV20 (Maybe a Mesa Boogie?)
- Juice_JIM (Orange Terror Jim Root)
- Sur_SL68 (Suhr SL68)

Bass:
- ADAtube (ADA)
- Almbic (Alembic)
- G800K_7 (Gallien-Krueger 800)
- TR_Trad (Trace Elliot?)
- Mark_T501 (MarkBass TTE501)
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Re: Amp modellers/IR loaders and latency

Post by Sam Spoons »

I've been thinking if I could make it work for me and, much as I like the concept, I don't think two foots witches will quite do it. I'll give it some more thought, it is only for the odd open mic so it should be doable, maybe with a bit of rearranging.
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Re: Amp modellers/IR loaders and latency

Post by adrian_k »

Yeah it’s really a studio/practice box, I could use it for open mic but I don’t need to change anything mid-song.
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Re: Amp modellers/IR loaders and latency

Post by Sam Spoons »

For me it would be a simple jam session rig. The few proper gigs I do I'd use my valve amp and either analogue pedals or the Headrush and between gigs that stuff lives in the studio.
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Re: Amp modellers/IR loaders and latency

Post by Wonks »

The bogSV20 could be a Bogner Shiva 20th anniversary model.
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Re: Amp modellers/IR loaders and latency

Post by adrian_k »

Wonks wrote: Wed Jan 08, 2025 1:36 pm The bogSV20 could be a Bogner Shiva 20th anniversary model.

:thumbup:
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Re: Amp modellers/IR loaders and latency

Post by Wonks »

The unit is also available badged as the M-vave black box. The name gives the colour of the case away.
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Re: Amp modellers/IR loaders and latency

Post by adrian_k »

Clearly inferior as there is no ‘z’ in the name.
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Re: Amp modellers/IR loaders and latency

Post by Wonks »

Doesn’t a hyphen trump a z?
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Re: Amp modellers/IR loaders and latency

Post by adrian_k »

You are so cynical :D
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Re: Amp modellers/IR loaders and latency

Post by Sam Spoons »

Wonks wrote: Wed Jan 08, 2025 2:16 pm Doesn’t a hyphen trump a z?

Don't you mean doesn't a Musk Trump a Zuckerberg?
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Re: Amp modellers/IR loaders and latency

Post by Sam Spoons »

Some additional questions regarding the Leo Jaymzzzzzzz ;) Silverbox: :D

Does it have looper? How long is loop time?
Can I load my own speaker IRs
And bypass the amp module?

I suspect the answer to 1 & 2 is 'no' (at that price I'll be amazed if it does but I can't find a definitive 'no' online just about a dozen videos 'merican shredders saying things like "Yo" , "Y'all" and "Awsome dude"... and making horrible noises with it...).
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Re: Amp modellers/IR loaders and latency

Post by adrian_k »

You are right, no looper, and as far as I can see you cannot load your own cab IRs. There is a USB-C port but I think that’s just for charging and audio out.

You can switch off any of the modules so yes the amp model can be turned off.

The IR module is at the end of the chain, so you could switch that off and plug the box into your own IR loader, if that helps.

I agree, the YouTube reviews are pretty useless. As usual.
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Re: Amp modellers/IR loaders and latency

Post by Wonks »

The blackbox version has software that appears to be for loading IRs, presumably your own. Tried running it but it needs the device connected before it shows you anything.
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