{"product_id":"0884088412470","title":"Understanding Vacuum Tube Guitar Amplifiers","description":"Gerald Weber, president of Kendrick Amplifiers, guides viewers through the nuts and bolts of vacuum tube guitar amps in this detailed instructional program. Useful for professionals and beginners alike, this title includes useful tips about AC and DC voltage and current, tone shaping, vacuum tube types, and much more.","brand":"HAL LEONARD CORP","offers":[{"title":"Default Title","offer_id":47086620377328,"sku":"0884088412470","price":69.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0737\/7593\/9824\/files\/0884088412470_p0.jpg?v=1763892569","url":"https:\/\/shop-qa.barnesandnoble.com\/products\/0884088412470","provider":"Barnes \u0026 Noble (DEV)","version":"1.0","type":"link"}