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F1 Group Buy *** GB is Now Closed *** Contact hifimaker directly to see if any extra boards are available. **How to Pay** Boards will be ordered Jan. 14th, 2009 Please pay for your boards via PayPal using the following link: https://www.hifimaker.com/boards.html If you do not have PayPal, payment can still be made with a credit card during checkout. The Buy button defaults to 2 boards for 2 channels. Additional boards and shipping options are available during checkout. Please email if you have any questions. Any balance above actual costs will be donated to DIYAudio.com. We may have a few boards leftover after the GB closes, but order before the deadline to guarantee a set. Thank you Nelson for your VERY generous approval of our DIY non-commercial F1 GB. The F1 is a balanced input transconductance amplifier for high efficiency speakers such as Lowther's, Fostex's, or Jordan's. This F1 board design and build thread is located in the Pass Labs forum: https://www.diyaudio.com/forums/showthread.php?s=&threadid=135115 Board specifications: - The boards are 0.062" FR-4 epoxy glass - Double sided, green solder mask on both sides, and with a silk screen on the top layer. - The copper traces are 1 1/4 oz. - Dimensions are 2"x9" or 50.8mm x 228.6mm. - The top layer is a ground plane. Approximate Cost: - Prices will be set once the totals are known. 50 boards are $14.00 each, 70 boards are $13 each, 100 boards are $11 each. - plus shipping which is probably a buck to deliver a pair of boards in the US, international slightly more. - Board costs are rounded up to the nearest dollar, with any extra going to DiyAudio? as a donation - Payment via PayPal only F1 Service Manual with Schematics: https://www.firstwatt.com/downloads/f1_srv_man.pdf F1 BOM: https://www.hifimaker.com/documents/F1-BOM.pdf F1 Board Pics: https://www.hifimaker.com/F1_DIY_Amp.html F1 Assembly Guide: https://www.hifimaker.com/F1_DIY_Amp.html The PCB is for 1 channel only. Please enter your name and amount of pcbs and update the Grand Total: || Username || # of F1 amp boards (2 needed for Stereo) || Country || Comments || || hifimaker || 4 || USA || || || MEGA-Amp || 6 || USA || || || mithomas || 2 || USA || || || Planet10 || 4 || Canada || || || SteveA? || 2 || USA || || || valo || 2 || Norway || || || samsagaz || 4 || Argentina || || || vonfilm || 2 || USA || || || rpafenberg || 2 || USA || || || audiotux || 2 || Germany || || || Guiness || 2 || USA || || || Stroob || 2 || USA || || || Kraljmatjaz|| 2 || Italy || || || JimS || 4 || USA || || || caligula455|| 4 || USA || || || markgall || 4 || USA || || || audiotony|| 2 || USA || || || pchw|| 2 || USA || || || sad mafioso|| 2 || USA || || || ipolyakov|| 2 || USA || || || joschl|| 4 || Germany || || || andy2667|| 4 || Hong Kong || || || gjorgji|| 4 || Canada || || || Belkinmousepad||2||USA|| || || vegges||2||USA|| || || ljk11||2||USA|| || || Woody||2||USA|| || || ejfud||2||USA|| || || AlanElsdon?||4||UK|| || || CfM?||4||Germany|| || || SoapSeller?||4||Israel|| || || Marec||2||UK|| || || Khundude|| 4 || Canada || || || HIPCHECK|| 2 || USA || || || Phil Townsend|| 4 || USA || || || naamanf|| 4 || USA || || || cgrums|| 2 || USA || || || cprof1|| 2 || USA || || || wlhuang|| 4 || TAIWAN || || || heinz1|| 2 || Germany || || || hayenc||4 || USA || || || Pillendreher|| 2 || Germany || || ||masag1||2||Germany|| || ||folkeb||2||Norway|| || ||rsotirov||2||Canada|| || ||steenoe||2||Denmark|| || ||grenert||2|| USA || || ||Donovad||2|| USA || || || Grand Total || 132 || Grand Total || || |