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TTVJ Portable  

post #1 of 14
Thread Starter 
HI All,

Well we have a novel thing going here - we are going to be able to deliver the TTVJ Portable headphone amp on time as promised (late July)!!!

The TTVJ Portable amp, designed by Pete Millett, will start shipping at the end of this week or Monday at the latest!

Not only is there a new amp but there is also a version that will include an on board DAC for $100 more. So you will have a choice of just the amp for $349 or the amp/DAC for $449!

It is a very slim, compact amp with great sound and built to last a lifetime. I think you will find it to be the best sounding portable available.

Here are some of the features ... and a link to our webpage with pictures!

TTVJ Portable Headphone Amplifier [TTVJ Portable Amp] - $349.00 : TTVJ, Todd The Vinyl Junkie

TTVJ Portable Headphone Amplifier
Features:
• Stepped Attenuator - No cheap volume control pot here. Small potentiometers are notoriously bad - they mis-track, get noisy, and break. So the TTVJ portable uses a microprocessor-controlled analog stepped attenuator. Each of the 32 steps changes the volume level by a precise 2dB, and the gain difference between channels is less than ±0.2dB - compare that to normal pots that at best provide ±3dB! The volume setting is indicated by the color of the front-panel LED. In addition, a switch allows you to select 0dB, 10dB, or 20dB of maximum gain, to accommodate all sources and headphone sensitivities.

• High output power - What's the point of a headphone amp if it can't drive any more than your iPod? The TTVJ portable puts out 3.3V RMS and up to 100mA of output current, so can easily drive any headphones. The regulated power supply guarantees full output power over the life of the battery.

• DC-coupled design - The signal path in most portable amps is AC-coupled, with a single power supply. This requires the audio signal to pass through multiple capacitors, which degrade the sound and limit frequency response. The TTVJ portable has a bipolar power supply, allowing the audio path to be DC-coupled. That means the low-frequency response extends from 0Hz to over 100kHz!

• Long-lasting, rechargeable battery - The TTVJ portable contains a lithium-ion battery which will power the amp for more than 15 hours at typical listening levels. It recharges in about 2 hours from any USB port, or a USB wall charger. You can also operate it while plugged in to keep the battery topped off.

Specifications:

• Frequency response: DC to >100kHz, ±1dB; 20Hz - 20kHz ±0.1dB @ 1V out
• Maximum output: 3.29V RMS into 150Ω; 2.14V RMS into 33Ω
• Output source impedance: Approximately 2Ω
• THD+N: 0.004% @ 1V RMS out into 150Ω or 33Ω
• Broadband noise: <10μV RMS, unweighted, integrated over 20Hz - 20kHz
• Output DC offset: <5mV
• Input impedance: 10kΩ
• Maximum input level: 2V RMS
• Channel tracking (gain difference between channels, all volume steps): <±0.2dB
• Maximum gain: 0dB, 10dB, or 20dB (switch-selectable), ±<0.5dB
• Dimensions: 104mm long x 70mm wide x 12mm thick
post #2 of 14
very cool!
post #3 of 14
you gotta be kidding me! portable with stepped attenuator!
post #4 of 14
Quote:
Originally Posted by Todd View Post

... The volume setting is indicated by the color of the front-panel LED.
Very Nice!!!
post #5 of 14
which opamps does the DAC have? how do you think the DAC and amp compare to the Pico?
post #6 of 14
I got to check it out at CanJam and chat with Peter Millet. The color changing LED is very slick. If you've ever used the Portable Millet Hybrid tube amp, this one is quite a bit thinner.

-Ed
post #7 of 14
What kind of DAC and are the opamps "Rollable" ?
post #8 of 14
Quote:
Originally Posted by gilency View Post
which opamps does the DAC have? how do you think the DAC and amp compare to the Pico?
Quote:
Originally Posted by boomy3555 View Post
What kind of DAC and are the opamps "Rollable" ?
This.
post #9 of 14
Quote:
Originally Posted by ZoNtO View Post
This.
What is "This"?
post #10 of 14
Quote:
Originally Posted by dannie01 View Post
What is "This"?
Uh yeah, x2.
post #11 of 14

I know!

Quote:
Originally Posted by ting.mike View Post
you gotta be kidding me! portable with stepped attenuator!

I know, seriously! Been waiting for this
post #12 of 14
Does anyone have it yet?
post #13 of 14
I'd be interested to hear how this compares to the P-51 Mustang and Pico.
post #14 of 14
So has anyone taken the plunge and bought one yet?
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