Mjolnir audio srd 7 electrostatic transformer. Lists for $820, with shipping from Iceland currently running at about $100. 00 May 12, 2023 · Mjolnir Audio SRD-7 Headphone Adapter for Electrostatic Headphones. Lists for $820, with shipping from Iceland currently running at about $100. Oct 24, 2003 · Might drag my Opus 21 into the fray for an additional analysis of the SRD/power amp combo. The Stax SRD-7 energizer works differently than a regular Stax amplifier. So what I did here is to put the excellent transformers into a much better enclosure with my own bias supply to maximize their potential. But the condition is as good as new. Feb 21, 2024 · Mjolnir Audio SRD-7 energizer/transformer for sale. Selling for Aug 2, 2025 · No trades/offers, thank you. The entire collection has been in storage for the last 15 years and is in great working condition. This is also all to see what kind of sound I can get with the SRD 7 in the chain, since I need money and a brand/model decision for an electrostatic amp. On top of that the input to the transformers is protected from overload and the output has a clamp circuit so it can never damage the headphones connected to it. Built like a tank. Be great to have a power amp fill the bill for a while. Feb 21, 2025 · He invested in his audio when he lived in England and then NYC. That lot sold out really quickly last year and I finally had time to build some more. In great condition!$475 Paypal friends and family ONLY. Aug 2, 2025 · "As an offshoot of the SRD-7 below, I’ve made a few units with Lundahl transformers instead of the Stax units. Recently picked up the Mjolnir KGSSHV, so the SRD-7 is up for sale. Buyer covers ConUS shipping. Quoting Birgir from Mjolnir Audio: As an offshoot of the SRD-7 below, I’ve made a few units with Lundahl transformers instead of the Stax units. 2 and SR-007 Mk. Sep 30, 2008 · I have several high quality tube and SS SET that works fantastically with K1000 and plan to use them for electrostatics. 1. Looks and works great. This is probably the most solidly built piece of gear I've owned in 30 years! Sold my Stax, movin Here are some design notes from the builder: So what I did here is to put the excellent transformers into a much better enclosure with my own bias supply to maximize their potential. Could any one comment on this? Find many great new & used options and get the best deals for Mjolnir Audio SRD-7 Stax Electrostatic Energizer at the best online prices at eBay! Free shipping for many products!. Or pay cash and pickup! Nov 6, 2022 · Mjolnir SRD-7 in excellent condition. The rest of the circuitry is mostly the same except the Lundahl units are further upgraded with better power transformers, better parts and upgraded wiring. This is a great way to run any Stax Pro headphone. 1. So I got an SRD-7 Adaptor and converted it to power high- and normal-bias Stax 'phones. This is for use with electrostatic headphones, allowing you to use a conventional speaker amplifier as the amplifier for them. This allows you to hook up any "pro" Stax headphone to a regular audio amplifier. Dec 17, 2025 · The only things I saved were the transformers and the Stax sockets. Feb 15, 2026 · As an offshoot of the SRD-7 below, I’ve made a few units with Lundahl transformers instead of the Stax units. "As an offshoot of the SRD-7 below, I’ve made a few units with Lundahl transformers instead of the Stax units. Over the years I’ve accumulated a large number of SRD-7 Dec 10, 2021 · Classified: FOR SALE - Mjölnir-Audio SRD-7 Estat Transformer Box asking for $575. Paypal fees are included Briefly used the Mjolnir with the Wadia 151 (25wpc), bel canto c5i (60wpc), Wyred4Sound mINT (100wpc) and Dussun T6 (100wpc) integrated amplifiers to drive the SR-L500 Mk. Mjolnir Audio SRD-7 Headphone Energizer for Electrostatic Headphones (Shipping Included) Photo Nov 9, 2019 · Mjölnir-Audio SRD-7 Headphone Amps/DACs for sale. It requires to be piggy-backed to a standard speaker amplifier, where it takes the current from the speaker amplifier and convert it to the necessary high voltage power for driving Stax Electrostatic headphones. Aug 13, 2022 · When I decided last year to explore some Stax electrostatic headphones, I discovered that even their older-model headphone amps are jaw-droppingly expensive. First I could add bias circuit of SRD-7 MkII that spritzer posted on my SRD-6, if the output transformer is the same between SRD-6 and pro bias of SRD-7 mkII. From Website:People have been asking for years to do some transformer boxes (or energizers) to drive electrostatic headphones and I finally relented. sbv uzjm ossqzfs imf mcmww agerd fxin zksnn enbgs aor