Pair 1

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最後修改時間: 2025-03-05 17:30:20

i am not sure how to load photos here

Will see if I can load photos

最後修改時間: 2025-03-05 15:45:55

Where can i find a pair of ECC33 valves?

I have 2 pairs of monoblocks.

The one set came from the SABC (South African Broadcasting Corporation.

Re. #1807

6SN7 可用在12.1 ，在自給偏壓下管子的實際工作參數會自行調整，問題是不大的。

ECC33 當然是最佳的原設計。

最後修改時間: 2025-03-05 10:10:03

以前玩12.1時做過少少research. 以下是3隻相似但不同的推動膽比較.

6SN7跟原本線路的ECC33比較. 放大倍數,屏阻同柵極電壓都有眀顯分別.



最後修改時間: 2025-03-04 22:56:34

Hi
Is the 6SN7 valve good for the Leak 12.1? Is ECC33 compulsory?

這個前級只可配合 LEAK 古董後級來使用，例如 TL12.1， TL10.1，
後級要有 極高靈敏度 (１２５ｍＶ for full output power)

見圖



最後修改時間: 2024-11-08 05:28:20

各位师兄……请教这台前级配乜型号后级出到高密度靓声？

每次見到呢種構造都特別開心

好多50年代尾60年代的fender and marshall guitar amp, 都會選擇這種構造

對我呢種雞手鴨腳, 鍾意自己去整嘢嘅人嚟講係比較容易

My stereo pre-amps... vintage but each works nicely.

I have one Point One Stereo pre-amp already.

It has been fully restored by the seller and it works well.

I paid USD $500 (including shipping from the USA), not as cheap as a dead chick, but it has been FULLY RESTORED and it works well.



最後修改時間: 2024-09-14 05:04:55

#179

Chi,

Thanks!

UNTESTED and no pictures to show the internal condition

GBP 150-175 EACH.... and at Ipswich (far from Chertsey).

not really a dead chick deal (冇死雞執) :)

最後修改時間: 2024-09-14 04:59:39

Same. Link

Seem good


https://www.facebook.com/marketplace/item/472821862399284/

Richard, FYI.

Leak Point One(x2) & Leak Varislope Pre-Amps.


https://www.facebook.com/marketplace/item/472821862399284/?ref=browse_tab&referral_code=marketplace_general&referral_story_type=general&tracking=%7B%22qid%22%3A%22-1277100551973625447%22%2C%22mf_story_key%22%3A%22548917530886047613%22%2C%22top_level_post_id%22%3A%22548917530886047613%22%2C%22commerce_rank_obj%22%3A%22%7B%5C%22target_id%5C%22%3A548917530886047613%2C%5C%22target_type%5C%22%3A6%2C%5C%22primary_position%5C%22%3A2%2C%5C%22ranking_signature%5C%22%3A8860175221013040195%2C%5C%22commerce_channel%5C%22%3A501%2C%5C%22value%5C%22%3A0.00018742415723521%2C%5C%22upsell_type%5C%22%3A129%2C%5C%22candidate_retrieval_source_map%5C%22%3A%7B%5C%227881711088606656%5C%22%3A3016%2C%5C%228164301586950912%5C%22%3A3016%2C%5C%228521936321172797%5C%22%3A3016%2C%5C%227968532803257081%5C%22%3A3016%2C%5C%228600308426654259%5C%22%3A3016%2C%5C%228031284220297879%5C%22%3A3016%7D%2C%5C%22grouping_info%5C%22%3Anull%7D%22%2C%22lightning_feed_qid%22%3A%22-1277100758195469830%22%2C%22lightning_feed_ranking_signature%22%3A%229051854933101634903%22%7D




最後修改時間: 2024-09-14 00:55:50

Haha 兄，

歡迎！

竟然有可能有啲 狀態咁好嘅古董

如果去你嗰邊工作或者探親真係要come to you 欣賞欣賞

最後修改時間: 2024-09-08 20:59:47

Underneath

It has been fully restored by the seller before coming to my hands. TCC capacitors (electrolytic, metalised and paper-in-oil) have all gone. In place are Russian oil (green x4) and Hunts (black x2) for signal coupling, and some cheap metalized film (red ) mainly for EF86's screen voltage. Quite a sensible approach to reduce restoration cost.

Surprisingly all the original, British made vintage potentiometers (two layers for stereo) are all reliable and left/right quite balanced. It is long-life and much more accurate than the USA made vintage potentiometers (e.g. in EICO pre-amps) .

I have replaced 4 modern made cheapy 50uF/10V cathode by-pass electrolytics BY vintage NOS ones (silvery x4). The overall look is pleasing and it sounds better. :)



最後修改時間: 2024-09-08 20:02:35

Internal

Compared to many USA vintage pre-amps, LEAK Point One Stereo uses two EF86 in each channel, one for phono stage and one for tonal/line stage (total 4 EF86's).

Many if not most USA vintage pre-amps use one 12AX7 for phono and more than one 12AX7/12AU7/12AT7 for tonal/line stage. So, the gain in Point One STEREO is much lower than many USA vintage preamps. But it is exactly TL12.1's extremely high input sensitivity (0.125V input for full output power) wants, a perfect-match!

LEAK Point One STEREO pre-amp, the EF86 sound.