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Showing results for tags 'valve amp'.
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Hi, I am planning to buy my first integrated valve amp preferably with a phono stage. I have a maximum budget of £2k. I am thinking about a Graaf GM50b mark 2 (no phono), a Copland CTA 405-A or an Audio Note Oto SE. I have demoed all 3 over the years and am torn. My speakers are Bosendorfer AC1s - slightly unusual. Sensivity 91db. I would greatly appreciate an thoughts or recommendations. Thanks.
will777888 posted a topic in Private HiFi ClassifiedsOctave V70SE integrated valve amplifier and black box power supply upgrade, both in silver. I may regret this, but I have decided to try active speakers, which means there is now an opportunity to purchase this wonderful tube amplifier. I am the second owner and have enjoyed seven fantastic years listening to and beholding this amp. This is a V70 amp which received an upgrade from the factory to SE specification in 2011 (I have the invoice). Included in the sale is a black box power supply upgrade which multiplies the PS storage capacitance by 4x. This improves the dynamic range and helps the amp cope with low impedance speaker loads. I initially purchased this after reading that Dynaudio (which I owned at the time) used Octave amps in their show systems. The amp sounds great, very powerful and punchy and clean yet refined with lovely rich harmonic colour. Best of both worlds. It outputs about 70W per channel. This is a low maintenance valve amp, biasing the power tubes is made very easy with small pots on the front face and LED indication of bias voltage. Unlike many components, I have never felt the itch to try something else. Only the purchase of active speakers makes this redundant. I have the original packaging, manuals, valve cover and remote. I will also throw in a few ECC83 input tubes. Currently running KT120 power tubes, I will also include 3x 6550 and 4x KT88 (used but working). I have only needed to replace power tubes once in seven years when one 6550 blew. The amp is in immaculate condition, as good as new really. You may see a couple of tiny marks where the tube cover screws down, but this would have been the case when unboxed for the very first time. Faultless electronically and audibly, this is built like a tank and should still be singing many decades from now. Octave V70SE currently retails for £4,795 and Black Box for £990 (Elite Audio). Asking £2,500 £1950. Collection and demo welcome near Tewkesbury. I could post after cleared funds but this is very heavy and with full insurance could be expensive. I am in need of a pre-amp for my new active speakers. I’m really after a balanced valve pre (e.g. Modwright) but may consider something else to tide me over until the right one comes along. So, I may be willing to consider something in part exchange. Also selling Zingali Zero Otto speakers, see separate advert. Sorry the photos aren’t great, I missed the last of the daylight. I may try to take some better ones soon.
Reduction on the Wam for this classic beauty, plenty of great reviews on-line and looks great on the hi-fi rack! £1700 - Comes with all documentation, original handbook, original EAR packaging and it had a complete clean up and service by Mr T de Paravicini middle of 2018, some dry solder joints renewed and I believe a power valve replaced and checked for suitability. In very nice condition, there are two tiny small scuffs on the middle chrome housing, but you have to look over the top of it for it to really show, otherwise almost mint elsewhere. The front fascia is clean, free of marks and the gold coloured rotary dials have minimal signs of use or wear. Included also is an after market power cable, a box of valves, 7 of Edicron 6l6GC, however, not a complete set but almost. I'm certain the amp is currently fitted with Svetlana's. Some specs below: Parallel Push-Pull pure Class A circuit stereo valve power amplifier with control unit built in. 6 line inputs. 50 watts per channel output into 4, 8 or 16 ohm. Happy into any load. Push-pull from input to output. Low overall feedback. Winner of the Absolute Sound (USA) Golden EAR Award 1999. Valves List - 2 x ECC83, 2 x ECC85, 8 x EL34 Power output - 50 watts/channel (30Hz - 15kHz at 1% THD int Power Consumption - 200 watts total I.M.D. - Less than 1% at any level from 10mW to 50 Wa Output Damping Factor - 12 Power Bandwidth - 15Hz - 40kHz at less than 3% THD Input Sensitivity - 200mV Signal to Noise Ratio - 85dB Size - W 16'' (405mm), D 16'' (405mm), H 6'' (150mm) Weight - 20kg Input Impedance - 47k Ohms Some more pics: A Google search will bring up an old advert from another forum, which is the same amp and the pictures are clearer. Thanks for looking, any questions please PM me and we'll discuss. I'd rather not post, it's very heavy, if it helps we can discuss alternatives. If you require post, it will require you to organise a suitable courier with insurance. Ade / Parcelmonkey
WAD 300b Custom Clone Power Amp, David Coe built at AD Audio £2,000 NOW £1800 Well this is a very, very reluctant sale indeed. I bought this beautiful amp from the builder, renowned Valve amp engineer, David Coe (Juancho) at AD Audio. He built the 300b for himself as the bench mark for all Valve amps going through his workshop. So this was his personal amplifier. When I purchased it, I intended it to see me to the grave... (I had badgered David for a long time to sell it to me) At the time I had some super lovely KUDOS C2 speakers, and quite frankly it was end game. Truly magical. Alas, I then did a bloody ridiculous thing, like you do when you have the system sounding right!..... Along came the Vintage Tannoy itch!!! The 300b with my Tannoy Monitor Gold speakers has stunningly good Mids and the High frequencies, but sad to say with the Tannoy drivers, the bass was left a tad wanting. So I went out and got myself a Radford. Which, as widely documented, seemingly the perfect partner for the Tannoys, but this 300b actually sounds far far better! So that brings me to this point with the WAD 300b custom clone. This is a unique opportunity to take custody of an Amp Considered by many to be Among the world's best power amps, the WAD 300b has an enviable reputation and has that truly authentic 300b sound along with enough drive for a very wide range of speakers. This particular example was built as one of a very limited run of just four clones in custom made polished stainless steel chassis. All Point to Point Silver wiring through out and Components used are of the highest available, Black Gate capacitors for the main power supply, cathode bypass and decoupling duties along with oil filled ASC capacitors and Mundorf Tube Caps. Resistors are Kiwame and Shinkoh. The amp has been converted to battery auto bias (new self charging batteries just added) and has had the dissipation reduced to run TJ Meshplate valves. It will come with a matched quad of wonderful TJ Meshplate valves, with low hours Compared to the original circuit it also has additional chokes fitted to the input stage for greater dynamics and Image stability. The Sound is utterly exquisite and the amp produces around 25 watts with the TJ Meshplates. The amp uses Zero negative feedback. The amp also has transformer taps for 4,8, 16 ohms. Any 300b tube can be used and the amp can be adjusted to give more output with other 300b valves that require this. The 2 knobs on the top of the amp are Humbuckers and one simply adjusts for zero Hum, once set thats it for a long time. It's Auto Biasing, so no need to get your meter out or anything technical. Simple! The amp is in Tip-Top condition, with only the odd faint swirl of a polish marks on the polished Stainless Steel finish. It has very recently been fully checked over and serviced by David Coe. I have a spare quad set of 300b valves in the cupboard, not checked for a while, and i'll include them with the sale. I can't stress enough how special this Amp is. It was a privilege to own such a thing. It weighs an absolute Tonne and would prefer to sell with a demo. So I'd really say collection from Barnet, but will deliver within reasonable distance or meet up. Price is reduced to £1800 which is a bargain for such an amplifier.