Atma-Sphere har nå kommet med en ny spennende forforsterker.
Denne er en god del billigere en de andre Atma-Sphere forforsterkerene.
Jeg har dessverre ikke hørt denne enda, men i følge ryktene er den veldig god.
Som vanlig for Atma-Sphere er den laget i et røft og tøft retro utseende.
Atma-Sphere "The UltraViolet"
For info og priser om våre produkter, se vår hjemme side:
Loddefjord HiFi forhandler Atma-Sphere, Zu Audio og Peachtree Audio
For tester m.m om våre produkter, se vår facebook side:
https://www.facebook.com/LoddefjordHiFi
Den kan bestilles i tre utgaver:
Kr 18.900,- Uten Riaa
Kr 22.900,- med Riaa
Kr 27.900 med Riaa og stepup transformer
Sitat fra R.Karsten:
"For many years we have been refining a 4- tube circuit (2 tubes if line stage only). We have had many long debates about whether we should market it, as its a departure from our normal stuff; its single-ended (which is the big deal) and is more conventional circuitry. It uses a pair of 6SN7s for the line section and a pair of 12AT7s for the phono section.
However its also a very nice sounding unit, and we've seen it easily take on preamps that cost several times more with no worries. We've had a prototype that we have been playing here at Atma-Sphere for the last 3 years; we know this preamp very well and it really does do the job!
It has a welded chassis, 4 inputs and isn't very big. So far the plan is that they are entirely hand-wired and that has been working quite well. It has vintage styling, but not like our other products. Actually it is the first of a new lineup of amps and preamps."
The UltraViolet preamplifier is based on a circuit that we have used for many years, but never marketed before. About 40 years ago, Ralph Karsten began developing his own circuit for use for friends on a budget but with high end audio aspirations. Over a period of decades, the circuit has seen a lot of refinement. It is a simple circuit (and obviously a complete departure from our other products), based on a very capable and refined 6SN7-based line section with a simple phono section based on 12AT7s. We have seen this preamp best preamps costing up to five times more; when we say 'refined', we mean it!
We never really considered marketing the circuit though, as it is so different from the rest of our product line. But friends and associates convinced us that we had something special, especially for its price so here it is.
The preamp is available in three forms: a basic line stage, a full function preamp with high output MM capability, or with the addition of of a set of Jensen stepup transformers, it works with any low output moving coil cartridge as well.
- Simple zero feedback line section
- Cardas RCA connectors used thoughout
- optional dual output connections
- Shunt-style balance control
- heavy-duty construction aluminum chassis
- Precision components used throughout
- Low-noise "star" grounding topology
- Three-year general coverage warranty with one year warranty on tubes
Line stage frequency response
2 Hz-200 KHz, +0 dB, -2dB
Line stage gain
15 dB
Line stage input impedance
100 Kohm W single-ended
Line stage output
12V
Output impedance
400 Ohms from 2Hz to 100KHz
Phono stage input impedance
47 K W,
Phono stage input overload
500 mV
Phono stage gain
55 dB
Phono bandwidth
5 Hz-90 KHz within ½ dB
RIAA accuracy
Within .1 dB
RIAA Phono sensitivity
( for 0.5 V @ 1 KHz ) 0.2 mV(m. stepup Trafo)
Tube complement
2 x 12AT7 phono
2 x 6SN7GT line section
Dimensions
15 3/8" wide x 7.5" deep x 5." high
Weight
7 lbs.
Loddefjord HiFi forhandler også Zu Audio og Peachtree Audio
Loddefjord HiFi. Zu Audio
Loddefjord HiFi. Peachtree Audio
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