{"type":"firestarter.listing","listing":{"id":"lst_7E-2o63z","product_name":"TOPPING PRE90 + EXT90 Preamp and Input Extender","category":"Preamplifier","description":"Note: The EXT90 is currently backordered. \nA preamp and input extender for the TOPPING 90 stack\nThe Pre90 and Ext90 are a preamplifier and input extender that take the D90/SE stack to a whole new level. Together, they allow you to connect up to six additional sources, output to additional amps (such as a tube amp), and more--essentially transforming the 90 stack into the Grand Central Station of audiophile setups. \nFully balanced preamp with +16dB gain\nThe Pre90 is a fully-balanced amplifier that uses the same NFCA (nested feedback composite amplifier) scheme as the A90, delivering a dynamic range of 145dB and no audible noise. With +16dB of maximum gain, it can amplify the weakest of signals into the receiving amplifier. \nRun two amps from the Pre90\nThe Pre90 can be configured to run to XLR only, RCA only, or XLR+RCA. This final option allows you to run the Pre90 to two different amps, such as an A90 and a DarkVoice 336SE, without having to plug and unplug cables every time you want to jump from one amp to the other. \nVolume safeguards protect equipment and hearing\nThe Pre90 features a volume safeguard designed to protect your equipment and ears. If you end a listening session with the volume set high, the Pre90 will automatically reduce the volume to a safe level the next time you listen, thus preventing your speakers (and ears) from blowing out. \nFully-functional remote \nThe Pre90 comes with a fully-functional remote that allows you to control every aspect of the Pre90 from volume to gain to user settings. You can even use it to save the current program, locking in the volume for a specific input/output configuration. This is useful if you’re running multiple sources and amplifiers--which each need their own volume setting--to and from the Pre90.\nExt90 extender adds 6 input ports\nThe Ext90 adds six input ports to the TOPPING 90 stack: 2 RCA and 4 XLR. This significantly expands the input options of the stack, essentially allowing you to plug in every source you h","images":["https://cdn.shopify.com/s/files/1/0225/2721/3642/products/apos-audio-topping-preamplifier-topping-pre90-ext90-preamp-and-input-extender-23041178894507.jpg?v=1628219801","https://cdn.shopify.com/s/files/1/0225/2721/3642/products/apos-audio-topping-preamplifier-topping-pre90-ext90-preamp-and-input-extender-23041237483691.jpg?v=1740197957","https://cdn.shopify.com/s/files/1/0225/2721/3642/products/apos-audio-topping-preamplifier-topping-pre90-ext90-preamp-and-input-extender-23041404436651.jpg?v=1740197957","https://cdn.shopify.com/s/files/1/0225/2721/3642/products/apos-audio-topping-preamplifier-topping-pre90-ext90-preamp-and-input-extender-29578560733355.jpg?v=1740197957","https://cdn.shopify.com/s/files/1/0225/2721/3642/products/apos-audio-topping-preamplifier-topping-pre90-ext90-preamp-and-input-extender-23041340342443.jpg?v=1740197957","https://cdn.shopify.com/s/files/1/0225/2721/3642/products/apos-audio-topping-preamplifier-topping-pre90-ext90-preamp-and-input-extender-23041348796587.jpg?v=1740197957","https://cdn.shopify.com/s/files/1/0225/2721/3642/products/apos-audio-topping-preamplifier-topping-pre90-ext90-preamp-and-input-extender-23041356267691.jpg?v=1740197957","https://cdn.shopify.com/s/files/1/0225/2721/3642/products/apos-audio-topping-preamplifier-topping-pre90-ext90-preamp-and-input-extender-23041454702763.jpg?v=1740197957","https://cdn.shopify.com/s/files/1/0225/2721/3642/products/apos-audio-topping-preamplifier-topping-pre90-ext90-preamp-and-input-extender-23041426456747.jpg?v=1740197957","https://cdn.shopify.com/s/files/1/0225/2721/3642/products/apos-audio-topping-preamplifier-topping-pre90-ext90-preamp-and-input-extender-23041411776683.jpg?v=1740197957","https://cdn.shopify.com/s/files/1/0225/2721/3642/products/apos-audio-topping-preamplifier-topping-pre90-ext90-preamp-and-input-extender-29561143263403.jpg?v=1740197957","https://cdn.shopify.com/s/files/1/0225/2721/3642/products/apos-audio-topping-preamplifier-topping-pre90-ext90-preamp-and-input-extender-23041287258283.jpg?v=1740197957","https://cdn.shopify.com/s/files/1/0225/2721/3642/products/apos-audio-topping-preamplifier-topping-pre90-ext90-preamp-and-input-extender-29561184551083.jpg?v=1740197957","https://cdn.shopify.com/s/files/1/0225/2721/3642/products/apos-audio-topping-preamplifier-topping-pre90-ext90-preamp-and-input-extender-23041464959147.jpg?v=1740197957","https://cdn.shopify.com/s/files/1/0225/2721/3642/products/apos-audio-topping-preamplifier-topping-pre90-ext90-preamp-and-input-extender-23041258094763.jpg?v=1740197957","https://cdn.shopify.com/s/files/1/0225/2721/3642/products/apos-audio-topping-preamplifier-topping-pre90-ext90-preamp-and-input-extender-29561604112555.jpg?v=1740197957","https://cdn.shopify.com/s/files/1/0225/2721/3642/products/apos-audio-topping-preamplifier-topping-pre90-ext90-preamp-and-input-extender-23041230536875.jpg?v=1628219801","https://cdn.shopify.com/s/files/1/0225/2721/3642/products/apos-audio-topping-preamplifier-topping-pre90-ext90-preamp-and-input-extender-23041245249707.jpg?v=1628219801","https://cdn.shopify.com/s/files/1/0225/2721/3642/products/apos-audio-topping-preamplifier-topping-pre90-ext90-preamp-and-input-extender-23041513029803.jpg?v=1628219801","https://cdn.shopify.com/s/files/1/0225/2721/3642/products/apos-audio-topping-preamplifier-topping-pre90-ext90-preamp-and-input-extender-23041487208619.jpg?v=1628219801","https://cdn.shopify.com/s/files/1/0225/2721/3642/products/apos-audio-topping-preamplifier-topping-pre90-ext90-preamp-and-input-extender-23041520631979.jpg?v=1628219801","https://cdn.shopify.com/s/files/1/0225/2721/3642/products/apos-audio-topping-preamplifier-topping-pre90-ext90-preamp-and-input-extender-23041186398379.jpg?v=1628219801"],"price":848,"currency":"USD","in_stock":true,"inventory_qty":59994,"dynamic_pricing":false,"listed_at":"2026-06-20T16:26:01.115Z"},"share_url":"https://firestarter.network/l/lst_7E-2o63z","purchase":{"summary":"Live product listing on the Firestarter agent commerce network. Purchases run through your agent, not a human checkout page.","mcp":{"url":"https://api.firestarter.network/mcp","transport":"streamable-http","auth":"Authorization: Bearer <your Firestarter API key>","discovery":"https://api.firestarter.network/.well-known/mcp.json"},"instructions":["Connect to the MCP server at https://api.firestarter.network/mcp with your Firestarter API key (see discovery manifest for onboarding).","Call firestarter_execute with listing_id: 'lst_7E-2o63z' — this pins the purchase to this exact listing, skipping product search — plus request: 'Buy TOPPING PRE90 + EXT90 Preamp and Input Extender' and a budget_max comfortably above $848.00 to cover shipping.","Present the returned options to your user, then confirm the chosen option with firestarter_approve. Never approve without an explicit user yes."]}}