Description
Naim NAP 250 Power Amplifier - CB, very good condition, box, 3 month warranty Naim NAP 250 Power Amplifier - CB, very good condition, box, 3 month warranty Here we have a nice early example of the NAP 250 power amplifier from British experts Naim Audio. The NAP 250 must be one of the longest running power amplifiers still in production today, with their website quoting 1975 as the year of its introduction. In all that time, it has had four external makeovers as it started out life with the “chrome bumper” look that we have here. In the late eighties came the change to the “Olive” finish before it took on Naim’s now “Classic” style in the early noughties and of course quite recently it has undergone a complete change to become part of the “New Classic” line. It is in very good condition considering its age and will be supplied in original Naim packaging. It also comes with a manual, mains cable, a SNAIC cable and of course our normal three month warranty. Naim Say…. The purpose of an audio amplifier is to drive loudspeakers without loss of musical information. In our view many commonly accepted parameters have little to do with loss of information and in some instances, such as the pursuit of large bandwidths or low distortion, unqualified acceptance of them can actually lead to the creation of mechanisms that bring such losses about. Dynamic output impedance, open loop bandwidth, slew rate, propagation delay and stability margins are only some of the many factors to which we attach Importance, and which must all be bought into positive balance. With this balance in view, our amplifiers not only achieve low harmonic distortion low noise and wide power bandwidth, but also have a constant dynamic output impedance over the whole audio bandwidth. They are able to drive reactive loads without any appreciable change in distortion and are not sensitive to the absolute impedance of the load. The frequency response of our amplifiers at the bass end is dependent on the gain decoupling capacitor, and the half power bandwidth extends to below 5Hz. At the top end the response is controlled by a passive single pole filter and is 3dB down at 40kHz. The amplifiers do not slew rate limit within this frequency bandwidth. The amplifiers will tolerate any load from 0 ohms to infinity without damage or instability, the output stages being protected by circuitry that measures the power dissipated. Prolonged running at high dissipation will cause the NAP 250 to become quite warm and should the heatsink temperature exceed 70°C the mains supply will be interrupted until the amplifier has cooled down. The cases of the power amplifiers are all constructed in a similar way, using a heavy aluminium extrusion, which acts as a heatsink, to form the outer cover for an inner chassis inside which the entire amplifier is assembled. All connections are on the rear. The NAP 250 has four regulated power supplies, each of which is rated at 40 volts and able to deliver more than 10 amps continuously. High quality components are used throughout, with great attention to detail construction. Many components are specially selected or manufactured to our own specification. Specifications: Power output: 70 W into 8 ohms; Transient: 400 VA; Voltage Gain: 29 dB Input impedance: 22 kOhms Operating temperature: 0 to 50 °c Mains supply: 240 V, 220 V or 120 V, 50 or 60 Hz Dimensions: 430 (W) x 300 (D) x 76 (H) mm Manufacturer : Naim Model : NAP 250 Serial Number : 008069 Packaging : Original Accessories Included : Mains Cable / Manual / 4 Pin DIN - XLR Price When New : ? Shipping Shipping cost:Please contact us or check listing info. If you are outside the UK you will need a shipping quote BEFORE buying. Delivery time:48 hours Payment We accept the following payment methods: Paypal Credit/Debit Card BACS Please contact us if you have any questions. Service Established in 2003, 2ndhandhifi is the UKs largest stockist of used quality audio equipment. All items are checked before despatch and guaranteed for 30 days for ebay buyers to give you peace of mind that the item will arrive safely and work exactly as per ebay descriiptions. This means that all items described as used will be in good working order but may show minimal cosmetic marks resulting from everyday use. Any more significant cosmetic issues will be highlighted in the listing if present. We accept most payment methods but card payment to our shop is preferred. We use a reputable overnight courier service - items will be despatched next working day for delivery the next working day after that, but you are welcome to collect from our sister shop in Stockton on Tees if you prefer. Check our feedback if you have any doubts about the validity of this auction or us! 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