stakkallapelli
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- Jun 9, 2023
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Hi, I posted a similar inquiry in another thread requesting helpful experience on the Threshold SL10 preamp compared with another preamp and received some very helpful information from forum members. Thank you.
I might now have an opportunity to invest in a Spectral DMC-10 Gamma preamp and am comparing it to our Threshold SL10. After listening to the Spectral DMC-10 Gamma at a store's audio system setup it sounded excellent though i noticed that piano action and decay is not as fleshed out as with the Threshold SL10 and some notes had a sense of edginess -- akin to some digital recordings -- that is not present with the Threshold; had the same impression with bass notes in jazz music, where the Spectral sound was not as fleshed out. Both units are equally fast in terms of relaying the recorded information from vinyl to the speakers; both are very silent, though there was a very noticeable hum from the Spectral-based system (it was hooked up to a turntable with a moving magnet cartridge).
I listen primarily to vinyl using a low output moving coil (0.24mV). I don't have the opportunity to listen to the Spectral in our own system context but just wondering if my overall impression on the Spectral DMC-10 is accurate and inline with others' experiences. My interpretation of the Spectral sound could be inaccurate and it might in fact be a unit worth investing in to substitute for the SL10.
Please help with your experiences on whether transitioning from the Threshold SL10 to the Spectral DMC-10 would be a lateral move or a suboptimal choice give my initial listening impressions and once again, thanks for your input.
The Spectral DMC-10 is in stock but very good condition. Here are upgrades to the Threshold SL10:
I might now have an opportunity to invest in a Spectral DMC-10 Gamma preamp and am comparing it to our Threshold SL10. After listening to the Spectral DMC-10 Gamma at a store's audio system setup it sounded excellent though i noticed that piano action and decay is not as fleshed out as with the Threshold SL10 and some notes had a sense of edginess -- akin to some digital recordings -- that is not present with the Threshold; had the same impression with bass notes in jazz music, where the Spectral sound was not as fleshed out. Both units are equally fast in terms of relaying the recorded information from vinyl to the speakers; both are very silent, though there was a very noticeable hum from the Spectral-based system (it was hooked up to a turntable with a moving magnet cartridge).
I listen primarily to vinyl using a low output moving coil (0.24mV). I don't have the opportunity to listen to the Spectral in our own system context but just wondering if my overall impression on the Spectral DMC-10 is accurate and inline with others' experiences. My interpretation of the Spectral sound could be inaccurate and it might in fact be a unit worth investing in to substitute for the SL10.
Please help with your experiences on whether transitioning from the Threshold SL10 to the Spectral DMC-10 would be a lateral move or a suboptimal choice give my initial listening impressions and once again, thanks for your input.
The Spectral DMC-10 is in stock but very good condition. Here are upgrades to the Threshold SL10:
- All electrolytic capacitors in the preamp module were changed for Elna Silmic II capacitors
- The resistors in the phono input section were changed to Vishay Dale metal film
- All RCA input jacks were replaced with gold plated copper units
- The volume potentiometer was replaced with an Alps BLUE
- All input/output wiring replaced with foamed teflon insulated Single Crystal continuous cast oxygen free copper wire
- The balance control was taken out of the circuit.
- Electrolytics in the power supply were replaced with high quality units of higher capacitance (this went up from 13,800 mF to 24,000 mF)
- The diodes in the power supply were replaced with ultra fast soft recovery hex fred
- The connecting cable between power supply and preamp was upgraded with higher AWG teflon insulated pure copper wire.
- The IEC connector was replaced with a gold plated copper unit.
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