Modwright LS-100, Rogue RP-7, Aesthetix Calypso
I currently own a Rogue RP-1 and am looking to upgrade. Budget is ~2,500 (used). I have shortlisted the following 4 preamps:
In order of preference: smoothness, dynamics, moderate to light warmth, detail, soundstage.
It is being paired with a Classe CA-2200 amp, Laiv uDAC+uDDC, and a pair of Audio Concepts Jaguar 2000s.
I like how the RP-1 has the dynamics and detail of a SS but also adds some tube warmth and smoothness.
Would love to hear your experience with any of these 4 preamps individually, how they compare, or how you would characterize their sound.
Thanks!
Years back I owned a Rogue Magnum 99. Never thought it was any better than a CJ pre it replaced. At one point had the SWl 9.0 and liked it very much. Sold that and went to a SS pre for a couple years, but soon tired of it. Went to a LS 100 and have stayed with it . Still a current model and Dan Wright and company are second to none in customer service should it ever be necessary..My 2 cents... No experience with Aesthetix... |
I asked about tube preamps that included both MM and MC phono capability. Even if you do not need or want phono, some comments from members might give you some insight. An example: this unit has an amazing feature set, however several members in that and another thread mentioned NOISE. https://tmraudio.com/fresh-arrivals/aesthetix-rhea-mm-mc-tube-phono-preamplifier/ You might check the details of any seller’s return policies before you buy. Perhaps, before you buy, get them to say in writing that it is not noisy, just in case it is. |
Also got my attention, never saw or heard one. https://reverb.com/item/94882992-margules-sf220-tube-preamp-20th-anniversary-black-edition AI Quickie The Margules SF220 is a stereo vacuum tube preamplifier celebrated for its rich harmonic structure, fast transient response, and low output impedance designed to drive both solid-state and tube amplifiers optimally. Reviews, including those of the 20th Anniversary (SF220.15) and Black Edition models, describe its sound as warm yet detailed, with a "yin" character that avoids being overly bright or rolled off while maintaining lifelike scale and stunning vocal presence. Key technical features highlighted in reviews include a shunt power supply for improved Q damping and smoother dynamics, zero negative feedback circuitry achieved by strapping the input and output stages, and a separate internal power chamber to minimize noise induction. The preamplifier utilizes five 12AU7 dual triodes with a DC filament supply featuring active damping to reduce hum, and its frequency response spans 5-400 kHz with Total Harmonic Distortion (THD) below 0.014%. Pricing and availability have varied over the years, with the 20th Anniversary model (circa 2015) listed around $3,500–$4,599, while the Black Edition (circa 2019-2021) was offered at approximately $3,700 and later seen on the used market for $2,295. The 30th Anniversary Special Edition was priced at $8,000 and contributed to Margules Audio winning the "Best of Show" award at AXPONA 2025, praised for its tangibility and rhythmic poise in high-end systems. |
