We finally bit the bullet and gave up on trying to update the old version of the shop so we are installing the latest version of Abante Cart and we will re-populate it with products. Unfortunately, this means that we will not be bringing over customer data and previous order data. We apologise for this,… Read More »
Updated 1st December 2019 Updated 10 May 2018 Updated 1 June 2018 December 2019. Time moves on and the PF5102 has been discontinued by On-Semiconductor and is nearly unobtainium. It looks like the J111/J112/J113 are the only TO-92 JFETS suitable for our purposes. We are currently sampling the J113. Some Piezo Preamps will be shipped… Read More »
Update: Kits now available in the shop here. Update: Carsten posted a YouTube video here. Carsten Møller of Møller Mod in Denmark got in touch to enquire about modifying the Stompville True Bypass Relay project to make an A-B switcher. After a few emails and some discussion, we agreed on a specification and we present… Read More »
We have had a few enquiries about using the true bypass relay board with the control switch remote from the board itself (original article here) (kits available in the shop here). We should emphasise that as it stands, the true bypass board is designed for the ‘Stomp Here’ switch to be mounted in the same box… Read More »
Updated – see below for information on improving the design to lower the output impedance. We have had enquiries about adding volume and tone controls to the Unbalanced Piezo Preamp (available in the shop here). The PCB was not designed for the addition of these controls, so this article represents something of a hack. Here’s… Read More »
Following on from our articles on the Unbalanced piezo preamp and Guitar leads, buffers and true bypass we present a project to build your own JFET buffer pedal. The circuit is essentially the same as in the unbalanced piezo preamp with a few tweaks and may be built into a Hammond 1590B or similar stomp-box… Read More »
I had an enquiry about using the new unbalanced piezo preamp to buffer a guitar lead and I thought I would do a write-up on the low-down of buffering and bypassing. The basics of impedance and the effect of long guitar cables. When we talk about impedance, we are talking about resistance to the flow… Read More »
Update: Modules are available in the shop here now. I finally decided to retire the Altoids Piezo Preamp Kit and Altoids Piezo DI kit projects from the shop; I received good feedback from customers – but not enough people bought them. Fully built and tested Altoids Piezo Preamps are available from the shop here. The… Read More »
Phantom Piezo Preamp Modules are available from the shop here. Sometimes, back-of-the-envelope calculations do not tell the whole story (and neither do simulations). This article is a follow-up to the original article Phantom Piezo Preamp and addresses some errors and misconceptions that have arisen. The Phantom piezo preamp module (available in the shop here) has… Read More »
Update: reStomp re-ampers available for sale in the shop. Back in 2012, I wrote about re-amping and offered a design for a transformer-coupled interface between balanced-line output from a professional recording device and the unbalanced and lower-voltage input to a guitar amplifier. If you’re not familiar with re-amping, the idea is that you record (say)… Read More »