I also suggest that you consider visiting the Harbeth users group.
For what it's worth, I switched from the Spendor S3/5se to the M30s. Whilst there were similarities in the overall sonic signature, I immediately noticed a wider soundstage and dynamic range (deeper and better defined real bass, smoother mids & highs). But there are also similarities.
At the time I was driving both speakers with the stock Unico, cardas neutral reference cabling (non bi-wire). I have since switched to a McCormack pre-pro combo.
Noteworthy, the Spendors were originally mated with a NAD742 AV receiver (digital) and, this combination sounded rather muted and dull before I switched to the Unico. It was like night and day.
good luck!
For what it's worth, I switched from the Spendor S3/5se to the M30s. Whilst there were similarities in the overall sonic signature, I immediately noticed a wider soundstage and dynamic range (deeper and better defined real bass, smoother mids & highs). But there are also similarities.
At the time I was driving both speakers with the stock Unico, cardas neutral reference cabling (non bi-wire). I have since switched to a McCormack pre-pro combo.
Noteworthy, the Spendors were originally mated with a NAD742 AV receiver (digital) and, this combination sounded rather muted and dull before I switched to the Unico. It was like night and day.
good luck!