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  #1  
Old 01-31-2020, 06:37 PM
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Formerly YB-2 Formerly YB-2 is online now
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Default Any 300B Amp Users?

Anyone here using a 300B power amp? Am jonesing to give one a try after how well my 20wpc EL34 triode Class A amp sounds. I was quite fond of my CAD-572SE SET monoblocks that also made 20wpc, but could not afford to keep them running with tubes that ran <1000hr and cost ~$300/each.
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Old 02-01-2020, 06:07 AM
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I used to use a 211-based amplifier, but found a 300B amplifier has sufficient power to drive my speakers (I chose my 300B amplifier as it was designed specifically to mate with my speakers of the same brand); even using a linestage with no gain provides sufficient volume.

I think the 300B is a specialty amplifier as it is not likely to work with many speakers, perhaps only speakers in the 94 dB or greater range and an actual flat 8 ohms or higher. Pairing with less efficient speakers might be a setup for disappointment (any speaker with a minimum rating of greater than single digit watts is probably a no-go; my speaker minimum is 3 watts).

Getting a perfect match of speakers to the 300B amplifier results in purity of sound that may have few rivals and it plays plenty loud in smaller rooms.

Search "SET friendly speakers" or similar terms for a listing of the brands users have found work well with 300B amplifiers and maybe those that definitely do not work well.

Good luck in your search; the 300B amplifier has transformed my listening experiences (a nice, simple circuit that in my mind retains more of the original signal than higher-powered amplifiers with their more complex circuits) and barely uses 1 watt of power most of the time, probably fractions of 1 watt.
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Main: Aurender X100L, Esoteric Grandioso K1, The Truth linestage, Mara Machines MCI JH110 Reel to Reel 1/4" 2 track Hi-Fi version, Coincident M300B Frankenstein II amplifiers, 300B Psvane ACME Supreme 1% tubes, Coincident Triumph Extreme II speakers, Coincident Statement interconnects, Coincident Statement speaker cables, Coincident and Shunyata power cords, Coincident Statement USB, Element subwoofer with Behringer 24/96 crossover, Final Audio Design Sonorous X headphones, EMIA silver autoformer headphone volume control, Nordost Qbase8, Furutech FLUX 50 NCF and GTX-D NCF (R), HRS DPX Damping Plates, Tascam DA-3000/Mutec 3+ USB/SOtM 75 ohm, Mutec REF10, Shunyata Sigma Clock 50, Stillpoints, Symposium, Auralex, ADD-Powr ElectraClear/Wizard/Sorcer, PS Audio Noise Harvesters, High Fidelity Signature magnetic RCA adapters and MC-05.

Bedroom Headphone: Aurender N100H, Sonoma Acoustics Model One, WireWorld Platinum Starlight 7 USB, Furutech FLUX 50 NCF, Nordost Qbase4 QX4 QV2 and Frey 2 power cords, Stillpoints, ADD-Powr ElectraClear, PS Audio Noise Harvesters, High Fidelity MC-05.
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  #3  
Old 03-25-2020, 06:59 PM
joel_hifi joel_hifi is offline
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From time to time I hook up my Audion Silver Night pre & power amp (with Psavane 300B) 2x8W Class A driving with ease my Sonus Faber Elipsas rated at 91dB.

Addictive sweet sound
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