Originally Posted by ozorowsky
I was just poking at best buy and they talked me into a marantz 7055 amp.
Only thing I see is the Martin Logan speakers are 4ohm but the marantz amp says compatible with 6ohm speakers.
Do you think this will be an issue?
Also is it bad or good to run an amp with furman line conditioner?
It would be best to go with a unit that is rated at 4 ohms. The Monoprice Monolith amplifiers are a good choice, but there are other good choices as well.
Monoprice provides measurements of the Monolith amplifiers, Marantz doesn't provide measurements for the MM7055.
The 7055 has one pair of output transistors per channel, which is the minimum, the Monolith amplifier have five pairs.
The Monoprice amplifier is rated and tested into 4 ohms.
The Monoprice 5 channel units weighs 78 lbs, the Marantz unit weighs 35 lbs. These amplifiers are both Class AB amplifiers so weight makes a difference, heavier is better. The Marantz appears to have a smaller transformer and smaller heat sinks. A fan appears to plan a significant role in cooling in the Marantz unit. Fans can mean noise and maintenance issues. The Monoprice unit has no fan. Frankly the Monoprice unit is a lot more amplifier for the money.
The MM7055 is designed and made is China, which means it should cost less IMNVHO.
The Monoprice unit is designed and assembled in the U.S. although no doubt many of the components, such as transformers, circuit boards, etc. come from China.
o Concerning the Furman unit:
The first feature your Furman unit provides is excellent surge protection, which is important in any area where lightning is common or the power goes out often. Power company reclosers can generate all sort of spikes on the power line. Various units in your home may generate smaller surges that may slowly damage electronics. The Furman surge protector you have (not all Furman units) limit surges that are at quite low voltages, and should prevent this sort of damage over time as well.
Furman units also have excellent power line filtering. How much difference this makes is debatable, but the Furman units do remove noise, and are designed to fit with the impedances of typical home power service. Your unit appears to have other features as well.
Some people feel that power conditioners restrict amplifier "dynamics" or the like. If this worries you then just use a surge protector unit with the power amplifier. Furman's Powerstation 8 power strip is a nice unit, but you need to shop for good prices, which can vary 2 to 1. Lesser Furman units typically don't have the sophisticated surge protection.