I just got VOX AD15VT amp. Sounds OK for my basement hobby playing, It doesn't have an FX loop, but I wanna use Boss pedals. Phaser / Flanger / Analog Delay / Digital Delay / Octaver / Original Cry Baby

I don't want to be limited to the onboard one FX at a time. :brickwall:
So, I put my Boss pedals from guitar straight into amp.
BUT... when using hi-gain amp sim ... I get some pulsating noise every other 20 seconds, for a few second, that sounds like a heartbeat or cheap drum-machine. This was without the cry baby connected, as I somehow lost the AC adapter, for it.

Any ideas or solutions ? :dunno:

Man that sounds strange....:confused: The first time I messed with an amp here at home (before having any modeler) was with my Roland Cube 30 around 5 years ago, it does not have an effect loop as well, and the first (and only) pedal I bought is a Boss DD-3, with no AC adapter, so one damn 9 volt battery replaced every few hours of using it. So, though the amp is a different brandname, it fairly seems the same as what I started out with. I suppose that amp is a transistor based one as well just as mine. I´m clueless as to how all these stuff work, but it sounded great to me when I plugged my guitar to the pedal, and then to the amp. There´s a switch on the amp for a clean sound, with no amp emulating, which is what I personally preferred, but it worked well with the amp emulating on too.....maybe you put too much distortion on the signal and it couples (or however it´s said) with the pedals? Battery run out of juice?

The Vox AD##VT (Valvetronix) series has digital pre-amp for amp models and FX, but Tubes / Valves for output. It has a Headphone / Line Out, too.
I was going to get a Roland Cube, but my local store doesn't sell them, but the Vox sounded amazing, and even more amazing with my recently acquired Epiphone Les Paul Custom.
I had no pedals & noise issues when I had a 50 watt transistor Marshall from 1982 to 2000. So, I was amp-less for 7 years. Used a Zoom 505 + Boss Pedals.

I haven't had the time to try plugging into a different outlet, or running Boss pedals via batteries. Maybe on the week-end.

I have a DD-3 too, and know about batteries draining fast. I have a Zoom 505 too, and one hour and it gives up the ghost.
I also have a Boss Analog Delay which I like for "echo" FX (think - Rush 2112)
The Vox AD15VT Delay FX is similar to the DD-3. So, I somewhat content.

Good to hear there are possibilities. Just gotta experiment a bit more.

I also found a Vox amp forum today for the Valvetronix series, but haven't done any further research. Maybe tomorrow.

Phaser / Flanger / Analog Delay / Digital Delay / Octaver

Normally, these modulation effects should all be after the preamp in your effects chain. That may be causing your problem:dunno: Only the wah should be before the amp. Nothing's written in stone, of course, but you may want to try removing the effects from the chain, one at a time, to find the source of the problem.