We will consider all requests for component preferences, enclosure species or circuit type on custom work.  Contact us through this form for any questions including pricing.  Our products are shipped via USPS Direct Flat Rate, and that charge will be added to your invoice.  Specifications and appearance of products are subject to change with availability of components.  All our products are guaranteed for defects in materials and workmanship for one year.  All products and intellectual information are the sole property of The Analog Source.