{"product_id":"krell-s-550i","title":"Krell S-550i","description":"The S-550i is the larger of two new integrated amps from Krell. Both of these amps feature circuit boards that utilize surface-mount components. This means they can pack more power into smaller chassis than ever before. The S-550i is rated at 275 watts per channel into 8 ohms, and that doubles to 550 wpc into a 4-ohm load. This is all from a box that is less than 6 inches tall. So now you can get tons of Krell goodness in a small package and at a very affordable price.  For the uninitiated, Krell has been around for almost 30 years now, producing fine-sounding equipment with a rugged, industrial look. Some of the all-time best systems I have ever heard were built around Krell amplification and digital source components.  The S-550i embodies many of Krell's famous design features from its past amplifiers. Let's first begin by taking a look at the preamp stage. The preamp circuit is pure Class A biased and fully balanced. The architecture of this circuit is Krell's proprietary Current Mode topology, which is a very high-bandwidth design: Krell rates the preamp section as flat to 1 MHz!\n\nDesign: Fully Balanced Differential Class A\/B Integrated Amplifier Power Output: 275 wpc (8 Ohms); 550 wpc (4 Ohms) THD: \u0026lt;0.025% at 1 kHz Frequency Response: 20 Hz - 20 kHz +0, -0.08 dB Inputs: 1 Balanced XLR, 3 Unbalanced RCA, 1 iPod 30-Pin Connector Outputs: 1 Pair Pre Out RCA and 1 Pair Speaker Input Impedance: Balanced 95 kOhms; Single-Ended 47.5 kOhms Output Impedance: \u0026lt;0.073 at 20 Hz; \u0026lt;0.08 , 20 Hz to 20 kHz Damping Factor: \u0026gt;110 at 20 Hz (8 Ohm Load); \u0026gt;75, 20 Hz to 20 kHz (8 Ohm Load) Dimensions: 5.84 H x 17.26W x 17.70 D Weight: 64 Pounds  See also \u003clink\u003ehttps:\/\/www.absolutesounds.com\/pdf\/main\/press\/2013_07_Krell_S550i_HFN.pdf","brand":"Krell","offers":[{"title":"Default Title","offer_id":59370732683609,"sku":"2434","price":2790.0,"currency_code":"EUR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1066\/5721\/8905\/files\/krell-s-550i-1.jpg?v=1789119124","url":"https:\/\/wenwaudio.com\/en-de\/products\/krell-s-550i","provider":"W\u0026WAudio","version":"1.0","type":"link"}