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New Aurora Audio PCB Arrivals

Just a quick one. To showcase a few new Aurora Audio PCB. Merlin Blencowes Ultra High Gain preamp PCB is now back in stock with some very minor changes. First the mid control wiring has been corrected (it was reversed on the original) and the silkscreen has been adjusted ever so slightly. Other than that…

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Aurora Audio Preamp PCB Soundclips And An Exciting DIYfever Collaboration!

I’ve had a fair few questions about how each of the Aurora Audio preamps sound. If you’ve been looking around the store you will have noticed clips popping up on some of the PCB pages. Here’s all of them in one place. I will be adding clips for the Saturn Amp set as well as…

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An update regarding Merlin Blencowe’s Ultra High Gain Preamp PCB

UHGPRE

Since the small run I did of these boards ran out I have received a fair few questions asking if/when they would be back in stock. Originally I didn’t intend to do any more of these boards due to it being Merlin’s own design. However I reached out to Merlin and he said it was…

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12AX7 to 6N2P toggle switch guide

This post will cover the 12ax7 to 6n2p toggle switch wiring that I used recently in the Aurora Jupiter Preamp. Firstly lets cover the key difference between the two valve types. Typical 12ax7 valves wired for 6.3v AC heaters use pins 4&5 linked together for one side of the filament winding and pin 9 for…

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Aurora Jupiter Guitar Preamp Build Log: Part V: The final frontier!

DI out 2

This one took a little longer than I wanted but hey life gets in the way! A very small final step in the completion of the Jupiter preamp. The DI (dry) guitar output. Essentially what is happening is the input of the DI board is tapped directly from the input jack as can be seen…

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New PCBs available in the store

Temp Jupiter Picture

Just a quick update following on from the Jupiter preamp build logs. The Jupiter Preamp PCB is now available to purchase this is based on the lead channel of the legendary SLO and demos will be following shortly. Jupiter Preamp PCB This Saturn PCB Set is to build a 2ch full amp version of the…

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Aurora Jupiter Guitar Preamp Build Log: Part IV

This instalment of the Aurora Jupiter preamp is a little less exciting than I planned as there isn’t really much new to see as the GEQ daughterboard covers up the focal point and the boost board I etched myself to try out the circuit. Almost finished preamp Onto the boost. This is a slightly modded…

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Aurora Jupiter Guitar Preamp Build Log: Part III

This is the one where it actually starts to get interesting for most people. It LIVES! After some initial voltage testing and a shocking first start-up where a high gain preamp could only produce shimmering cleans we finally start moving. The clean issue above was due to the shielded cable on the gain pot shorting…

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Aurora Jupiter Guitar Preamp Build Log: Part II

Jupiter 12ax7/6n2p wiring

This second installation of the Aurora Jupiter Preamp build log is just a brief one! The main part is that the filament wiring has been done. It is much easier to remove the bracket from the chassis to do this. I opted to experiment a little this time and used a Dpdt switch to be…

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Aurora Jupiter Guitar Preamp Build Log: Part I

Jupiter Prea Build Log Front 1

This is something that I have been meaning to get around to doing for a while as this board is the replacement for the original Single Channel valve preamp PCB. Not only that this is testing the Rack Preamp Chassis fit. I had a day off work today so I got cracking on this. So…

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Coming soon. SMPS for preamps & New Aurora PCB

UHGPRE

Just a brief update on a few store additions. First up we have a new Aurora PCB. This one is probably not going to stick around for long due to the nature of it. It is based on Merlin Blencowe’s Ultra High Gain Preamp from his Designing Tube Preamps for Guitar and Bass Book. It…

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Aurora Audio Rack Project Enclosures Available Soon

Rack Enclosure Slideshow

In the coming months these will be available to order with a short wait time as they will be ordered and shipped as required. The finish is brushed black anodised aluminium with laser etched graphics. Initially these will be available for the soon to be released Jupiter Preamp PCB but are also suitable for use…

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Aurora Guitar Power Amp PCB Now Available!

Aurora Audio 20w 6V6/6P6S Power Amp PCB

This one took a little bit longer than I was hoping to get tested but the Aurora Power amp DIY PCB is now available to purchase. Quantities are limited as this is just left over stock from the prototyping but more will be coming soon. This board can be used to build a push pull…

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New Aurora PCB’s, A name change and a sale!

Saturn Amp PCB Preview

First of all the name and URL of this site will be changing slightly to Aurora Amps in the coming weeks. The new URL will be confirmed soon. Otherwise it has been a busy start to the year at Aurora. Countless hours have been put into designing, tweaking and testing new and revised designs. In…

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A peek at new PCBs from Aurora-Audio in 2022

Aurora Audio 20w 6V6/6P6S Power Amp PCB

At Aurora Audio we have many new DIY Project PCBs coming in 2022. Here is a preview of what is currently being tested and will be available over the coming months. Push pull mono valve /tube guitar power amp. We designed this board to build a power amp at 20w using 2x6v6 but it is…

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DIY 12AX7 to 6N2P-EV converter

Aurora Audio 12ax7 to 6n2p converter

For the last 12 months or so I have moved to using russian 6n2p-ev valves due to stock issues and price hikes. To use these valves in normal amps you either have to rewire the filament/heater supply or as I have done here make some converters. It’s an extremely easy project that will only take…

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