Kits for integrated amps?

martinman · 997

0 Members and 2 Guests are viewing this topic.

Offline martinman

  • Newbie
  • *
    • Posts: 3
on: February 15, 2021, 04:28:42 AM
I've built up a bunch of guitar amp kits over the past years.  I'm wondering if there is anything similar in the hi-fi world?  I'd like to build the Fender Super Reverb (all the bells and whistles) of the hi-fi world.  I'd need 3-4 analog inputs, 1 pre-out for my bottlehead crack, 1 subwoofer out, L/R binding for speakers, and enough power to drive Kef LS50s well (86db).  Does such a thing exist?  Can I get there with a combination of bottlehead kits (preamp / monoblocks, etc.)? 

Edit: reading through the forum I see that there are some workable solutions for nearfield listening.  That's not quite what I'm after.  I need to fill a large(ish) room. 

Thanks!
« Last Edit: February 15, 2021, 04:39:48 AM by martinman »



Offline Paul Joppa

  • Global Moderator
  • Hero Member
  • *****
    • Posts: 5822
Reply #1 on: February 15, 2021, 06:27:17 AM
To fill a large room with 86dB speakers, you're going to need 40 watts per channel. I'm not aware of any kits like that (doesn't mean they don't exist, of course).

Just for completeness, I'll mention a bell and a whistle you've left out of the list. In the so-called "Golden Age," integrated amp also included a phono preamp and tone controls.

Paul Joppa


Offline Thermioniclife

  • Sr. Member
  • ****
    • Posts: 794
Reply #2 on: February 15, 2021, 06:39:40 AM
While not an integrated amp you could build a Moreplay or a BeePre and a stereo amp like a VTA ST-70. My ST-70 is running kt88's
and you can rattle your teeth out if you want.
« Last Edit: February 15, 2021, 06:57:07 AM by Thermioniclife »

Lee R.


Offline Tubegopher

  • Full Member
  • ***
    • Posts: 90
  • Don Palmer
Reply #3 on: February 15, 2021, 09:12:11 AM
While not an integrated amp you could build a Moreplay or a BeePre and a stereo amp like a VTA ST-70. My ST-70 is running kt88's
and you can rattle your teeth out if you want.
I have built a couple of the VTA-70s but I have never tried using KT-88s. Do you need to make any mods to use them or just plug them in?

300B amps with 6SJ7 in Triode mode, dc fil. volt. for 300Bs. BeePre with Bill Milosz built Eros Phono. Teres Turntable, Pete Riggle "12 inch Woody Tonearm" Grace F9  with Soundsmith ruby cantilever stylus.Cambridge Audio CD with MHDT Labs Orchid DAC Rega NAOS Spkrs, Atelier Rullit super tweeters


Offline Thermioniclife

  • Sr. Member
  • ****
    • Posts: 794
Reply #4 on: February 15, 2021, 10:13:46 AM
Replace R 39 on the driver board with a 3.5k - 5k resistor. R39 is on the underside of the board. Set bias to 0.5 vdc

Lee R.


Offline Tubegopher

  • Full Member
  • ***
    • Posts: 90
  • Don Palmer
Reply #5 on: February 15, 2021, 12:54:39 PM
Thanks Lee, I will try that on my next version.
 ;D

300B amps with 6SJ7 in Triode mode, dc fil. volt. for 300Bs. BeePre with Bill Milosz built Eros Phono. Teres Turntable, Pete Riggle "12 inch Woody Tonearm" Grace F9  with Soundsmith ruby cantilever stylus.Cambridge Audio CD with MHDT Labs Orchid DAC Rega NAOS Spkrs, Atelier Rullit super tweeters


Offline adeep42

  • Full Member
  • ***
    • Posts: 212
Reply #6 on: February 15, 2021, 01:28:55 PM
I believe that the Akitika solid state power amp is 40 WPC. Herb Reichart of Stereophile magazine gave it a good review some time ago.