Monthly Archives: December 2014

02-28-15 Hairball Audio Preamp Building Workshop

Build Your Own Preamp

Hairball Audio ELEMENTS 500 series mic pre workshop

Whether you’re a seasoned gearhead with electronics experience or you’ve never built a circuit in your life, this all day workshop will teach you the basics of audio preamp design and give you the chance to build your very own 500 series preamp module!

Participants will select a Hairball Elements component kit of their choice, and receive step by step guidance through the assembly process. Learning essential electronics knowledge and troubleshooting basics will be a cornerstone of this workshop. Everyone is guaranteed a fully functional, great sounding mic pre!

Learn about all 3 Elements series mic pre’s below
or listen to samples HERE
Ultra transparent tone similar to Grace Designs, Millenia, or John Hardy M1 preamps. The Gold pre is great on acoustic instruments and vocals.
Comparable to a Neve 1073, the Copper pre delivers a rich, balanced sound. suitable for capturing the detail of any instrument.
The Bronze pre adds thick coloration to the low mids of your tone. Based on the distortion characteristics of the LA3, this preamp is ready to rock!
Where: AVL Professional 5015 208th St. SW  Lynnwood 98036
When: Saturday, February 28th, 2015
Length: 10 A.M. – 6 P.M. with a one hour lunch break (meal provided)
Cost: Workshop & component kit to build the pre of your choice $595
Non refundable $250 payment required at time of signup to reserve your seat. Remainder due at time of workshop
Class size limited to 10 participants SIGN UP NOW!
Via email:
Via phone: 206 285 7767 x103
Stay updated on our Facebook Event Page
You are welcome to bring your own soldering kit if you have one. Soldering irons for purchase and optional component upgrades available for additional fees. Participants are guaranteed a fully functioning elements series mic pre. Any soldering activity is not recommended for women who are pregnant or people with health conditions. AVL Professional & Hairball Audio are not responsible for injuries during the workshop. Lead solder is involved in this workshop, participation is at your own risk.


Join the FACEBOOK EVENT PAGE to stay up to date on workshop details!

600 MHz Bandwidth Changes

The FCC has recently ruled that the 600MHz-700MHz broadcast spectrum will be allocated for telecommunications use in 2016. This means that any wireless devices operating in that range will need to be decommissioned to make room for the companies purchasing the spectrum.

In 2008 the FCC auctioned off the 700MHz range (698-806 to be precise). Part of the logic behind this transition is that because digital television broadcasts use less bandwidth, there is free space available to re-purpose for new technology. The auctioning of the 600MHz range is the next phase in the FCC’s upgrade plan.

While this is all a step in the right direction for the “big picture”, it will cause severe inconvenience to facilities that rely on devices operating in the 600MHz range. Some examples include:

 SHURE PRODUCTS using the L4 range (638-662) 

SENNHEISER PRODUCTs using the B range (606-774)


Most operating ranges can be found on the back of your wireless receivers. Several manufacturers are offering incentives to replace your old wireless gear at a reduced price or providing refunds for returned “obselete” products.

If you would like to know what your options for updating are, give us a call anytime at

206-285-7767  or email

and we’d be happy to help make the transition as simple and affordable as possible.