A few new additions that have really solidified my 2ch system going to the next level.
1. JWN custom stereo tube amplifier, push pull, tetrode mode. This is a 6AQ5 based tube amp good for 12 watts of pure sonic bliss a side. (4) RCA 6AQ5 output tubes, (2) 12AX7 drivers and (1) RCA 5U4 rectifier are also included, all test excellent. 1/4" stereo jack on the front is for headphones, flip the switch behind the output transformers and the speakers shut off. Any impedance will do. Output trannies are set at 8 ohm. All iron (transformers) and chassis are vintage Hammond organ, doesnt get much better then that. If you are familiar with the sweet sound of 6v6 power tubes then you already know how nice these 6AQ5's are and they are inexpensive, too. Fully auto bias on the power tubes and auto balance inverter circuit, no adjustments ever needed. 12ax7, 12AU7, 12AT7, 12BH7 can be substituted for drivers with different results. The 5U4 rectifier can be swapped with a 5R4, too. This piece is 100% handmade in the USA, no circuit boards, no assembly line, hand built the old fashioned way, over built for years of trouble free , dead quiet operation. Dual 5-way binding posts are used as are gold RCA input jacks. A solid, standard IEC power connector is also used. 6.3v jewel pilot lamp lets you know when the power is on. Any standard line level source will do...Preamp, Ipod, Mixing Console or a CD Player with level control. The power switch is on front, headphone/speaker switch is behind the output trannies.
2. Frazier Monte Carlo D Monitors - 94DB sensitivity. A true giant killer when you consider price/performance.
3. Audio Mirror DAC1 Custom Modified by TRL in Zebrawood Case - It has been modified to eliminate the opamp output stage and is direct coupled from the DAC chips to the RCA's with Nichicon caps. Proprietary compound has been added to the 8 DAC chips. The SPDIF RCA input jack has been relocated to allow for more separation between it and the power cord. The toslink optical input has been disabled.
Modifications on this unit:
- New case made from Zebrawood and acrylic top
- Proprietary upgrades to the power supply
- Stock RCA input jack has been upgraded to a Cardas RCA jack
- Replacement of some internal wiring with proprietary TRL wiring
- Opamp output stage is eliminated
- RCA output is directly coupled to the DAC chips via Nichicon caps
- Proprietary compound has been added to all 8 DAC chips
- Output stage and power supply regulators and caps have been removed
- All power supply diodes have been replaced with ultra-fast diodes
Results from the TRL modifications dropped the noise level of the DAC 20db. The stock D1 Signature experienced distortion in the midrange from 1K-1200K, following the TRL modifications, the distortion in the midrange was eliminated. Also, the TRL modifications increased micro and macro dynamics, expanded depth, presence, and soundstage.
More music is clearly heard following the TRL modifications, as well as the accuracy with which the music is reproduced. Bass still has bloom as you would liken with tubes but is much tighter following the TRL modifications. The highs have more clarity and detail, while the harshness has been severely minimized. There is more naturalness and ambience to the sound.
4. Custom TRL PC and custom Wegryzn IC made with very pure 4N silver, air dielectric, silver solder, and terminated with WBT NextGen silver RCA's.
5. Promitheus Transformer Buffer - (second one). I like one of them between my DAC to preamp and one between my preamp to amp.