The standard Op-Amp I offer with this listing by default is the GAR 2520 which is a new and modern design that sounds closer to vintage API 2520 op-amps than current production API 2520. I also MAY have available GAR 1731, CAPI CA-0252, or Scott Leiber OpAmps available. The GAR 1731 and CAPI-CA-0252 are offered at the same price. The Scott Leibers Red Dots and Blue Dots cost extra. Output transformer is the Litz option.
Preamps are all tested with a scope, Spectra Foo, and listening tests. The item "CAPI VP312 Mic Pre with Litz Transformer BUILT & READY TO SHIP, API 500 Type" is in sale since Thursday, November 5, 2020.This item is in the category "Musical Instruments & Gear\Pro Audio Equipment\Preamps & Channel Strips". The seller is "process-haus" and is located in Bloomingdale, Illinois. This item can be shipped to United States, Canada, United Kingdom, Denmark, Romania, Slovakia, Bulgaria, Czech republic, Finland, Hungary, Latvia, Lithuania, Malta, Estonia, Australia, Greece, Portugal, Cyprus, Slovenia, Japan, China, Sweden, South Korea, Indonesia, Taiwan, South africa, Thailand, Belgium, France, Hong Kong, Ireland, Netherlands, Poland, Spain, Italy, Germany, Austria, Bahamas, Israel, Mexico, New Zealand, Philippines, Singapore, Switzerland, Norway, Saudi arabia, Ukraine, United arab emirates, Qatar, Kuwait, Bahrain, Croatia, Malaysia, Brazil, Chile, Colombia, Costa rica, Panama, Trinidad and tobago, Antigua and barbuda, Aruba, Belize, Dominica, Grenada, Saint kitts and nevis, Saint lucia, Montserrat, Turks and caicos islands, Barbados, Bangladesh, Bermuda, Brunei darussalam, Bolivia, Ecuador, Egypt, French guiana, Guernsey, Gibraltar, Guadeloupe, Iceland, Jersey, Jordan, Cambodia, Cayman islands, Liechtenstein, Sri lanka, Luxembourg, Monaco, Macao, Martinique, Maldives, Nicaragua, Oman, Peru, Pakistan, Paraguay, Reunion, Viet nam, Uruguay.