OPA4134 - what should I build?

[ftumch]

Got one of these bad boys lying around and I don't know what to build with it - any recommendations?

I tried it with a Belton Brick but the hiss was murder - I put that down to the extended frequency response

 

[jcpst]

Maybe an OD-1?

Parhelion Vintage Overdrive / BOSS® OD-1 Overdrive

A precursor to the Tube Screamer known for being the first overdrive effect to utilize diodes in a negative-feedback arrangement for clipping purposes.

aionfx.com

 

[hamerfan]

Like the TL074 and other quad amps its often used in multistage preamps and equalizers.

 

[dot matrix madness]

Phonopreamp. By far better harmonic distortions than the TL074.

 

[Feral Feline]

Something along the lines of hifi, such as an EQ or compressor or preamp — waste of the chip if used for a dirt circuit. YMMV

 

[dot matrix madness]

Something along the lines of hifi, such as an EQ or compressor or preamp — waste of the chip if used for a dirt circuit. YMMV

Definitely. TL074 is general purpose, NE5532 (dual OpAmp) is Hifi, OPA4134 is HighEnd.

 

[nooneknows]

OPA2134 is SUPPOSED to be superior, but the distortion profile of the NE5532 is still better, old but gold

 

[ftumch]

Something along the lines of hifi, such as an EQ or compressor or preamp — waste of the chip if used for a dirt circuit. YMMV

Yeah that's a good point. I'll do some digging

Thanks for the suggestions everyone

 

[drew.spriggs]

Yeah that's a good point. I'll do some digging

Thanks for the suggestions everyone

Just a single chip? I've got gerbers for a 6 band with footswitchable boost that loves fancy ICs.

I really do agree using high slew rate ICs for clipping doesn't sound that great

 

[ftumch]

Just a single chip? I've got gerbers for a 6 band with footswitchable boost that loves fancy ICs.

I really do agree using high slew rate ICs for clipping doesn't sound that great

Yeah just the one quad but I've got a tube of duos. I'd be interested in that gerber mate

 

[drew.spriggs]

Yeah just the one quad but I've got a tube of duos. I'd be interested in that gerber mate

No problem - I did have separate switching PCBs for it, but I'll do some rejigging to get everything onto a single PCB so they're easier to get made.

The first version I made did need an 18v supply, but I've changed over to an isolated DC-DC converter to make them way easier to power.

 

[ftumch]

No problem - I did have separate switching PCBs for it, but I'll do some rejigging to get everything onto a single PCB so they're easier to get made.

The first version I made did need an 18v supply, but I've changed over to an isolated DC-DC converter to make them way easier to power.

Cool mate sounds good. I've been messing around in Diptrace with charge pumps and such this week. Will be putting in an order in with JLBPCB in a day or two. I'm new to PCB design and I've been quite ambitious so far lol. Will see how that goes