Vintage KEF Reference Series Model 101 In nice condition and technically 100%. KEF is known for producing high-quality compact speakers, and set new standards with the B110 and T27 speakers that were later used in the world-famous LS3/5A monitor designed by the BBC. Model 101 combined the T27 tweeter with the SP1057 version of the B110 in a closed box of 6.7 litres. The system was fully protected from overload by the S-Stop system, including mechanical decoupling of the bass driver to minimise colouration and each pair was acoustically tuned to 0.5 dB. The result was a system with an accurate tone balance and detailed stereo imaging - suitable for use with the best electronics - and discreetly fits into the listening room. Specifications: System type: two-way, bookshelf speaker Housing type: Closed Dimensions: 340 x 180 x 190 mm Weight: 5.6 kg Input impedance: 8 ohms Nominal maximum power: 100W programme Amplifier requirements: 20-100 watts per channel at 8 ohms Frequency range: 90-30,000Hz +/- 2dB at 2m on measuring axis (-10dB on 47Hz and 40kHz) Sensitivity: 81dB on 1m for a pink noise input of 1W Crossover-frequency: 2500Hz Maximum output: 100dB on program peaks under typical listening conditions Finishes: walnut, teak, rosewood and black ash veneer Grille: black cloth