Purity Audio Design have announced the release of the Basis mk2 vacuum tube linestage. The Basis mk2 utilizes a Class ‘A’, zero feedback circuit based around a single 6SN7 dual triode per channel with a lower output impedance to allow better integration with a larger variety of amplifiers.

The Basis mk2 is said to “bring to the table a better sense of refinement over the original design with better resolution, transparency and detail retrieval. The larger power supply means dynamic impact remains intact during even the most demanding passages.”

Purity Audio Design also offers additional upgrade options for the Basis mk2 including a choke filtered, polypropylene power supply, signal capacitor upgrade and remote volume.

The Basis mk2 has a starting price of $2,500 US. A limited time introductory price is also being offered.

Unison Research has launched its latest integrated amplifier – Simply Italy – to commemorate the 150th anniversary of Italy’s unification as a nation.

This compact, 5 input, line level integrated clearly draws its inspiration from the Simply Two amplifier.

Unison have created a newly redesigned version of the Simply Two that shares many of its characteristics and sonic attributes with the famous original, but with a more modern appearance. Simply Italy offers the same 12 watts per channel, but now features a 6-Ohm output impedance, increasing the amp’s flexibility for use with 4 and 8-Ohm loudspeakers.

Amplifying stages are all strictly valve-based and operate in pure Class-A mode.

The output stage for Simply Italy consists of just one EL34 in single-ended ultra-linear configuration and this mode of operation is made possible by a particular development of the output transformers, which in practice, allow the pentode EL34s to operate almost as if they were triodes. The preamp and driver stage of the power output is entrusted to ECC82 twin triodes.

Unison Research’s design department has created an interestingly designed amplifier that harks back to the original Simply Two, yet incorporates “significant aesthetic improvements”.

The wood parts of the Simply Italy are said to be important for the aesthetic design but also play an important role in damping chassis resonance and “assist the delicate electronic parts, valves etc, to perform at their best.”

The Simply Italy boasts an ALPS motorized pot, infra-red remote handset and gold-plated speaker terminals. It is available in black and stainless steel with cherry detail inserts, or cherry with black inserts.

Cost is a pound short of £1500.

Red Wine Audio, manufacturer of battery-powered purist hi-fi products, has announced their first battery-powered high output amplifier which has been designed to drive even the most demanding speakers with ease.

Red Wine have received past accolades from reviewers and customers alike for their battery powered and somewhat minimalist designs but the praise often comes with a caveat – the moderate output of their amplifiers has not been ideal in driving inefficient loudspeakers or driving conventional loudspeakers to high volumes in large rooms.

Output from the Liliana is rated at 115wpc RMS into 8-ohms (230wpc RMS into 4-ohms)

“My goal in designing Liliana was to take full advantage of our premium LiFePO4 battery technology,” says Vinnie Rossi, President of Red Wine Audio. Adding, “With 8 FETs implemented in the Class AB output stage, Liliana allows for some serious “dc-direct” current delivery.” More »

Western Electric and the Western Electric WE300B valve has long been the holy grail for aficionados of that particular flavour of tube, but rarity has made them all but impossible to buy and prices are astronomical.

All that searching and saving could now be at an end…sort of as Chinese tube manufacturer Psvane Audio has stepped up to make a 1:1 replica of the original WE300B.

According to Psvane Audio, “the Psvane WE300B Replica is: “100% 1:1 replica of WE300B, including materials, structure, internal and external size – up to the detail of a tiny screw used”.

The Western Electric 300B replicas will be sold in pairs, are delivered in a beautiful presentation box and likely to be expensive  – 1000$ a pair in the US.

 

Hifi Pig has snoofled out some very interesting news for valve amplifier fans and enthusiasts of the iconic Radford STA15 and STA25 valve hi fi amplifiers.

UK based Radford Revival have announced the limited edition reissue of Radfords classic series 3 hifi amplifiers. The father and son team of Steve and William Moores hand-build these beautiful amplifiers to order and make them from the original, and hand drafted 1964 blueprints and the original hand-written transformer winding specifications.

Steve has a long history with Radford and has perhaps the largest collection of Radford amplifiers and transformers in the world.

The new transformers on the reissued amplifiers are superior to the originals in several respects. They are machine wound to modern safety and insulation standards. Superior termination is provided by tags embedded in the plastic bobbin, which are much stronger than the original tags, which were glued to the outer insulation of the winding and had a tendency to fall off.

Metal components and casework in the amplifiers are also reproduced from original blueprints (meticulously scanned and converted into metric) and the company used happens to be the very same company contracted by Radford in the 80s to product the metalwork for the Mk4 STA25.

I’m sure you will agree with HiFi Pig that these valve hi fi amplifiers are truly things of beauty and we wish the company every success for the future. We hope to have a review of the amplifiers in the very near future.

The STA15 is £2750 and the STA25 is £2800 which Hifi Pig thinks is a very reasonable sum for such a well crafted piece of engineering.