Mjolnir audio srd 7 electrostatic transformer. That lot sold out really quickly last year and I finally had time to build some more. Buyer covers ConUS shipping. 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. The entire collection has been in storage for the last 15 years and is in great working condition. Feb 21, 2024 · Mjolnir Audio SRD-7 energizer/transformer for sale. From Website:People have been asking for years to do some transformer boxes (or energizers) to drive electrostatic headphones and I finally relented. 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. The Stax SRD-7 energizer works differently than a regular Stax amplifier. Mjolnir Audio SRD-7 Headphone Energizer for Electrostatic Headphones (Shipping Included) Photo Nov 9, 2019 · Mjölnir-Audio SRD-7 Headphone Amps/DACs for sale. 00 May 12, 2023 · Mjolnir Audio SRD-7 Headphone Adapter for Electrostatic Headphones. Or pay cash and pickup! Nov 6, 2022 · Mjolnir SRD-7 in excellent condition. In great condition!$475 Paypal friends and family ONLY. Looks and works great. Be great to have a power amp fill the bill for a while. Sep 30, 2008 · I have several high quality tube and SS SET that works fantastically with K1000 and plan to use them for electrostatics. Oct 24, 2003 · Might drag my Opus 21 into the fray for an additional analysis of the SRD/power amp combo. Lists for $820, with shipping from Iceland currently running at about $100. 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. 2 and SR-007 Mk. 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. So I got an SRD-7 Adaptor and converted it to power high- and normal-bias Stax 'phones. Built like a tank. 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. 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. Dec 17, 2025 · The only things I saved were the transformers and the Stax sockets. 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. "As an offshoot of the SRD-7 below, I’ve made a few units with Lundahl transformers instead of the Stax units. But the condition is as good as new. This is for use with electrostatic headphones, allowing you to use a conventional speaker amplifier as the amplifier for them. Lists for $820, with shipping from Iceland currently running at about $100. This is a great way to run any Stax Pro headphone. 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. 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. 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. Selling for Aug 2, 2025 · No trades/offers, thank you. 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. Feb 21, 2025 · He invested in his audio when he lived in England and then NYC. hbsb fszcn bre ezi kqpj yatj xuz hnrbrkl fms dunog