Grado have five ranges of headphones. The In Ear Series, The Prestige Series, Reference Series, Statement Series and Professional Series. The mainstream Prestige Series headphones, such as the SR80i and SR125i offer great quality audio for very reasonable prices, once you get to the Reference Series you will certainly feel the bank balance start to dwindle. We are looking today at the second highest model in their range, the GS1000i which received the ‘i’ (improved) updated tag in recent years. They retail for around £950 in the UK, so they are certainly not an impulse buy. The best question is however, are they really worth the money?